Merge from emacs-24; up to 2012-12-22T02:59:08Z!cyd@gnu.org

* ack.texi, emacs.texi (Acknowledgments): Small updates

Don't call 'select' from emacs_gnutls_pull.

 src/w32.c (emacs_gnutls_pull): Don't call 'select', and don't loop.
 This avoids warning messages reported as part of Bug#13546.

* net/tramp.el (tramp-tramp-file-p): Fix docstring.

* net/tramp-sh.el (tramp-sh-handle-insert-directory): Handle
multibyte file names.

Improve instructions in etc/DEBUG, per bug #13775.

Use derived-mode-p in previous change

* doc/misc/flymake.texi (Syntax check statuses): Fix multitable continued rows.

Tweak for sgml-transformation-function

* lisp/textmodes/sgml-mode.el (sgml-xml-mode): Move before use.
(sgml-transformation-function): Give it a :set function.
(sgml-tag): Doc fix.

Doc fixes re set-variable

* lisp/cmuscheme.el (scheme-buffer):
* lisp/progmodes/inf-lisp.el (inferior-lisp-buffer):
* lisp/progmodes/tcl.el (inferior-tcl-buffer):
* lisp/textmodes/tex-mode.el (tex-command): Doc fixes.

* lisp/image-mode.el (image-mode): Add mouse bindings for mode-line-process.

* lisp/htmlfontify.el (hfy-default-header): Encode title string.  (Bug#7457)

Parallelize documentation builds.

This speeds up building of documentation on multiprocessor
platforms, and is motivated by Texinfo 5.0, which is much slower.
Add a toplevel rule 'make docs' to make all the documentation.
* .bzrignore: Add .dvi, .html, .ps.
* Makefile.in (DVIS, HTMLS, INFOS, PSS, DOCS): New macros.
($(DOCS), docs, vi, html, pdf, ps): New rules.
(info-real): Depend on $(INFOS) rather than doing it sequentially.
(dvi): Depend on $(DVIS) rather than doing it sequentially.
* doc/misc/Makefile.in (html): New rule.

* cmuscheme.el (scheme-buffer): Fix docstring.

Thanks to Xue Fuqiao for reporting this.

Port to Texinfo 5.0 by backporting trunk 2012-12-22T19:57:35Z!rgm@gnu.org and 2013-02-21T02:42:30Z!eggert@cs.ucla.edu.

* lisp/isearch.el (isearch-lazy-highlight-new-loop):
Set `isearch-lazy-highlight-start' and `isearch-lazy-highlight-end'
to `isearch-other-end' if it is not nil.

* lisp/replace.el (replace-highlight): Let-bind `isearch-other-end'
to `match-beg'.

* lisp/textmodes/ispell.el (ispell-highlight-spelling-error-overlay):
Let-bind `isearch-other-end' to `start', `isearch-forward' to t
and `isearch-error' to nil.

Fixes: debbugs:13402

Merge from emacs-24; up to 2012-12-21T07:35:02Z!ueno@gnu.org

ChangeLog fix

* net/tramp.el (tramp-ssh-controlmaster-template): Make it a
defconst.  Apply independent check for ControlPersist.

* net/tramp-sh.el (tramp-sh-handle-set-file-times): Set $UTC only
temporarily, via "env".

Make Info-edit obsolete

Ref: http://lists.gnu.org/archive/html/emacs-devel/2012-01/msg00374.html
(Warning: interminable bikeshedding in thread)

* lisp/info.el (Info-enable-edit): Remove.
(Info-edit): Disable it rather than using Info-enable.
(Info-edit-mode-hook, Info-edit-map, Info-edit-mode, Info-edit)
(Info-cease-edit): Make editing of Info files obsolete.

* etc/NEWS: Mention this.

* lisp/informat.el (Info-tagify): Handle buffers not visiting files.

Fixes: debbugs:13763

Remove package not updated in 10 years.

More doc updates for multi-frame images

* doc/emacs/files.texi (File Conveniences): Not just GIFs can be animated.

* doc/lispref/display.texi (Multi-Frame Images): Minor rephrasing.

* etc/NEWS: Related edits.

lisp/calc/calc-graph.el (calc-graph-show-dumb): Fix typo.

* lisp/files.el (basic-save-buffer): Move check for existing parent directory
after hooks.  (Bug#13773)

Port documentation to Texinfo 5.0.

* src/sheap.c (report_sheap_usage): Fix arguments of message1_no_log.

* src/sheap.c (report_sheap_usage): Prefer message1_nolog.

* progmodes/python.el (python-info-current-defun): Enhance
match-data cluttering prevention.

Added intial test suite for python.el.

* automated/python-tests.el
(python-tests-with-temp-buffer): New macro.
(python-tests-look-at): New function.
(python-tests-look-at-1)
(python-tests-look-at-2)
(python-indent-pep8-1)
(python-indent-pep8-2)
(python-indent-pep8-3)
(python-indent-inside-paren-1)
(python-indent-inside-paren-2)
(python-indent-after-block-1)
(python-indent-after-block-2)
(python-indent-dedenters-1)
(python-indent-after-backslash-1)
(python-indent-after-backslash-2)
(python-nav-beginning-of-defun-1)
(python-nav-beginning-of-defun-2)
(python-nav-end-of-defun-1)
(python-nav-end-of-defun-2)
(python-nav-beginning-of-statement-1)
(python-nav-end-of-statement-1)
(python-nav-forward-statement-
(python-nav-backward-statement-1)
(python-nav-backward-statement-2)
(python-nav-beginning-of-block-1)
(python-nav-end-of-block-1)
(python-nav-forward-block-1)
(python-nav-lisp-forward-sexp-safe-1)
(python-nav-forward-sexp-1)
(python-nav-forward-sexp-2)
(python-nav-forward-sexp-3)
(python-nav-up-list-1)
(python-nav-backward-up-list-1)
(python-imenu-prev-index-position-1)
(python-info-current-defun-1)
(python-info-current-defun-2)
(python-info-current-defun-3)
(python-info-current-symbol-1)
(python-info-current-symbol-2)
(python-info-current-symbol-3)
(python-info-statement-starts-block-p-1)
(python-info-statement-starts-block-p-2)
(python-info-statement-ends-block-p-1)
(python-info-statement-ends-block-p-2)
(python-info-beginning-of-statement-p-1)
(python-info-beginning-of-statement-p-2)
(python-info-end-of-statement-p-1)
(python-info-end-of-statement-p-2)
(python-info-beginning-of-block-p-1)
(python-info-beginning-of-block-p-2)
(python-info-end-of-block-p-1)
(python-info-end-of-block-p-2)
(python-info-closing-block-1)
(python-info-closing-block-2)
(python-info-line-ends-backslash-p-1)
(python-info-beginning-of-backslash-1)
(python-info-continuation-line-p-1)
(python-info-block-continuation-line-p-1)
(python-info-block-continuation-line-p-2)
(python-info-assignment-continuation-line-p-1)
(python-info-assignment-continuation-line-p-2)
(python-info-looking-at-beginning-of-defun-1)
(python-info-current-line-comment-p-1)
(python-info-current-line-empty-p)
(python-util-goto-line-1)
(python-util-clone-local-variables-1)
(python-util-forward-comment-1): New tests.

* lisp/simple.el (command-execute): Move from C.  Add obsolete check.
(extended-command-history): Move from C.
* src/keyboard.c (Qcommand_execute): New var.
(command_loop_1, read_char): Use it.
(Fcommand_execute): Remove, replace by an Elisp implementation.
(syms_of_keyboard): Adjust accordingly.

* tramp.texi (Android shell setup): Improve.  Reported by Thierry
Volpiatto <thierry.volpiatto@gmail.com>.

* lisp/jka-cmpr-hook.el (jka-compr-compression-info-list)
(jka-compr-mode-alist-additions): Handle .txz suffix for
XZ-compressed tar archives.

Fixes: debbugs:13770

* outline.el (outline-regexp, outline-heading-end-regexp): Use
variables, not options (bug#13731).

Setting this as a global option is likely to be useless, because it is
unlikely that all outline file will use the modified regexp.

Additionnally, if one of these variables if set through customize and
the outline keybindings don't work in a standard outline file, it is
hard to know why.

Thanks to T. V. Raman for reporting this.

Lispref updates for multi-frame images

* doc/lispref/display.texi (GIF Images, TIFF Images): Delete these nodes.
(ImageMagick Images): For :index, use an xref rather than duplicating.
(Other Image Types): Add GIF, adjust formatting.
(Multi-Frame Images): Rename from Animated Images.  Expand section.

* doc/lispref/elisp.texi (Top): Update menu for these changes.

Rework recent image-multi-frame stuff a little

* image.el (image-current-frame): Change from variable to function.
(image-show-frame): Rename from image-nth-frame.  Update callers.

* image-mode.el (image-multi-frame): New variable.
(image-mode-map, image-mode, image-goto-frame):
Use image-multi-frame rather than image-current-frame.
(image-mode, image-goto-frame):
Use image-current-frame as function rather than as variable.

* sheap.c (report_sheap_usage): Use message, not message1, so
  that we don't try to create a buffer while we're in the middle
  of dumping Emacs.  Explain why.

2013-02-19  Daniel Colascione <dancol@dancol.org>

        * sheap.c (report_sheap_usage): Use message, not message1, so
       that we don't try to create a buffer while we're in the middle
       of dumping Emacs.  Explain why.

* search.c (find_newline): Return byte position in bytepos.
Adjust comment.
(find_next_newline_no_quit, find_before_next_newline): Add
bytepos argument.
* lisp.h (find_newline, find_next_newline_no_quit)
(find_before_next_newline): Adjust prototypes.
* bidi.c (bidi_find_paragraph_start):
* editfns.c (Fconstrain_to_field, Fline_end_position):
* indent.c (compute_motion, vmotion):
* xdisp.c (back_to_previous_line_start, forward_to_next_line_start):
(get_visually_first_element, move_it_vertically_backward):
Adjust users and avoid calls to CHAR_TO_BYTE where appropriate.

Make cl-floatp-safe just an alias for floatp

* lisp/emacs-lisp/cl-lib.el (cl-floatp-safe): Make it an alias for floatp.

* lisp/emacs-lisp/cl-macs.el (cl--make-type-test)
(cl--compiler-macro-assoc): Use floatp rather than cl-floatp-safe.

* doc/misc/cl.texi: Remove commented out sections about cl-floatp-safe.

* lisp/net/tramp.el (tramp-get-debug-buffer): Ensure outline.el is not
loaded while outline-regexp is let bound.  (Bug#9584)

* progmodes/python.el (python-info-current-defun): Fix failed
defun name retrieval because of unwanted match-data cluttering.

* net/tramp-cache.el (tramp-get-hash-table): New defun.
(tramp-get-file-property, tramp-set-file-property)
(tramp-get-connection-property, tramp-set-connection-property): Use it.
(tramp-flush-file-property, tramp-flush-directory-property):
Rename argument to KEY.
(tramp-flush-connection-property): Simplify a little bit.
(tramp-connection-property-p): New defun.
(top): Reapply saved values only if there isn't a corresponding
entry in `tramp-connection-properties'.

Spelling fixes.

Merge from emacs-24; up to 2012-12-20T16:09:05Z!dmantipov@yandex.ru

* progmodes/python.el (python-indent-context): Fix
python-info-line-ends-backslash-p call.
(python-info-line-ends-backslash-p)
(python-info-beginning-of-backslash): Respect line-number
argument.
(python-info-current-line-comment-p): Fix behavior when not at
beginning-of-line.
(python-util-position): Remove function.
(python-util-goto-line): New function.

Remove some defunct/no longer relevant MORE.STUFF links.
Move info-look stuff to info-look.el commentary.

Cleanup some of EIEIO's namespace.
* lisp/emacs-lisp/eieio.el (eieio--define-field-accessors): New macro.
Use it to define all the class-* and object-* field accessors (renamed
to eieio--class-* and eieio--object-*).  Update all uses.
(eieio--class-num-slots, eieio--object-num-slots): Rename from
class-num-slots and object-num-slots.
(eieio--check-type): New macro.
(eieio-defclass, eieio-oref, eieio-oref-default, same-class-p)
(object-of-class-p, child-of-class-p, object-slots, class-slot-initarg)
(eieio-oset, eieio-oset-default, object-assoc, object-assoc-list)
(object-assoc-list-safe): Use it.
(eieio-defclass): Tighten regexp.
(eieio--defmethod): Use `memq'.  Signal an error for unknown method kind.
Remove unreachable code.
(object-class-fast): Declare obsolete.
(eieio-class-name, eieio-object-name, eieio-object-set-name-string)
(eieio-object-class, eieio-object-class-name, eieio-class-parents)
(eieio-class-children, eieio-class-precedence-list, eieio-class-parent):
Rename from class-name, object-name, object-set-name-string,
object-class, object-class-name, class-parents, class-children,
class-precedence-list, class-parent; with obsolete alias.
(class-of, class-direct-superclasses, class-direct-subclasses):
Declare obsolete.
(eieio-defmethod): Use `memq'; remove unreachable code.
* lisp/emacs-lisp/eieio-base.el (eieio-persistent-read):
* lisp/emacs-lisp/eieio-opt.el (eieio-class-button, eieio-describe-generic)
(eieio-browse-tree, eieio-browse): Use eieio--check-type.

* doc/lispref/text.texi (Change Hooks): Fix typo.

* eshell/em-unix.el (eshell/su): Require tramp.
(eshell/sudo): Require tramp.  Remove now unnecessary check.

* net/tramp-sh.el (tramp-sh-handle-start-file-process): Let-bind
`tramp-current-connection' in order to avoid an error when several
commands are invoked in a short time in eshell and friends.

Documented Eshell's insert output-redirection operator

Avoid leaking handles on MS-Windows.

 src/w32proc.c (new_child): Avoid leaking handles if the subprocess
 resources were not orderly released.

Fix a typo in a comment.

* lisp/emacs-lisp/eldoc.el (eldoc-highlight-function-argument):
Use font-lock-keyword-face for macros and special forms.

Fixes: debbugs:8345

Merge from emacs-24; up to 2012-12-20T05:05:41Z!dmantipov@yandex.ru

Fix bug #13735 with network streams on MS-Windows.
Revert changes to w32proc.c done since 2012-11-30T09:23:15Z!eliz@gnu.org.

Do NOT merge to trunk!

 src/w32proc.c (new_child): Remove the loop that attempted to salvage
 slots of dead processes.
 (new_child, delete_child, find_child_pid): Don't insist on
 procinfo.hProcess be NULL for a process slot to be considered
 inactive, or be non-NULL to be considered active.
 (reader_thread): Don't set the FILE_AT_EOF flag of a file
 descriptor if the corresponding child was deleted and its
 char_avail handle is NULL.
 (reap_subprocess): Don't reset the FILE_AT_EOF flag.
 (sys_select): Don't pass a NULL process handle to
 WaitForMultipleObjects.

Fixes: debbugs:13735 debbugs:13546

Don't use font-lock-syntax-table in lisp modes.
* lisp/font-lock.el (lisp-font-lock-keywords-1, lisp-font-lock-keywords-2):
Don't assume all identifier chars have syntax word.
* lisp/emacs-lisp/lisp-mode.el (lisp-mode-variables):
Remove bar-not-symbol.  Adjust callers.
(lisp-mode-variables): Don't set a font-lock-syntax-table.

Prefer `message1' over `message'.
* src/xml.c (init_libxml2_functions):
* src/sound.c (sound_warning):
* src/sheap.c (report_sheap_usage):
* src/process.c (wait_reading_process_output):
* src/msdos.c (XMenuActivate):
* src/macros.c (Fstart_kbd_macro, Fend_kbd_macro):
* src/keyboard.c (top_level_1):
* src/editfns.c (Fmessage, Fmessage_box):
* src/callint.c (Fcall_interactively):
* src/fns.c (Fyes_or_no_p): Prefer `message1' over `message'.

* net/rcirc.el (rcirc-keepalive): Fix invalid timer error.

Fix bug #13723 with redrawing vertical border in GUI sessions.

 src/xdisp.c (x_draw_vertical_border): For a window that is neither
 the leftmost nor the rightmost, redraw both the left and the right
 vertical borders.

lisp/gnus/mml2015.el (mml2015-epg-find-usable-key): handle revoked user-id

Move scroll-bar-adjust-thumb-portion.

* xterm.c (syms_of_xterm): Move scroll-bar-adjust-thumb-portion ...

* frame.c (syms_of_frame): ... to here.

* lisp/menu-bar.el (menu-bar-tools-menu): Fix case of EDE entry.

Add a very basic bisecting guide

* lisp/image-mode.el (image-mode-map): Add image-dired menu entry.

* lisp/image-dired.el (tumme): Make this alias obsolete.

* lisp/gnus/shr.el (shr-put-image): Use image-multi-frame-p if available.

A few small TODO and CONTRIBUTE updates

Generalize "animated" images to "multi-frame" images

* lisp/image.el (image-animated-types): Remove.
(image-multi-frame-p): Rename from image-animated-p, and generalize.
(image-animated-p): Make obsolete alias.
(image-animate, image-nth-frame, image-animate-timeout):
Use image-multi-frame-p.
(image-animate-timeout): If no delay, use image-default-frame-delay.

* lisp/image-mode.el (image-mode, image-toggle-animation):
Use image-multi-frame-p.
(image-mode): Adjust startup message for a multi-frame image.

* lisp/gnus/shr.el (shr-put-image): Only animate images that specify a delay.
This is consistent with the old image-animated-p behavior.

* etc/NEWS: Add placeholder for this.

Fixes: debbugs:10739

* lisp/image-mode.el (image-mode-map): Give it a menu.

* net/tramp-cache.el (tramp-connection-properties): New customer option.
(tramp-get-connection-property): Use it.

* net/tramp-compat.el (top): Require 'trampver.

* net/tramp-sh.el (tramp-remote-process-environment): Set
tramp-autoload cookie.

* tramp.texi (Top, Configuration): Insert section `Android shell
setup' in menu.
(Android shell setup): New section.
(Connection types, Default Method)
(Frequently Asked Questions): Mention "scp" instead of "scpc".
(External methods): Remove "scpc" and "rsyncc" entries.
(Frequently Asked Questions): Remove entry about ControlPersist.

* lisp/info-look.el (info-lookup-select-mode): If major-mode has no
info-lookup-alist entry then search up derived-mode-parent.

Fixes: debbugs:8660

Remove functions and macros unused on MS-Windows.

 src/w32.c (sys_chown): Remove unused function.

 nt/inc/ms-w32.h (chown, logb): Remove, unused.

Don't use __STDC__ on MS-Windows unless necessary (Bug #9066).

 nt/inc/ms-w32.h (__STDC__): Fiddle with value only for MSVC.

 src/w32term.c <input_signal_count>: Declare 'volatile' unconditionally.

Don't set h_errno on MS-Windows except in gethostbyname.

See http://lists.gnu.org/archive/html/emacs-devel/2013-02/msg00293.html
and the following discussion for the details.

 src/w32.c (set_errno): Reset h_errno and don't set it to any other
 value.  Set errno instead.
 (check_errno): Reset h_errno.
 (sys_socket, socket_to_fd, sys_bind, sys_connect)
 (sys_gethostname, sys_getservbyname, sys_getpeername)
 (sys_shutdown, sys_setsockopt, sys_listen, sys_getsockname)
 (sys_accept, sys_recvfrom, sys_sendto, fcntl, sys_read): Don't set
 h_errno.
 (sys_gethostbyname): Set h_errno only errors detected.

(read-regexp): Add regexp for symbol at point to the defaults (Bug#13687).

* lisp/replace.el (read-regexp): Tighten the regexp that matches tag.
When tag is retrieved with `find-tag-default', use regexp that
matches tag at point.  Also update docstring.

Fix bug #13725 with file notifications on MS-Windows.

 lisp/autorevert.el (auto-revert-notify-add-watch): With 'w32notify',
 add watch for the file, not its parent directory, since w32notify
 sets up the watch for the directory internally.

Add variables for default/minimum animated image frame delay

* lisp/image.el (image-default-frame-delay): New variable.
(image-animated-p): Use image-default-frame-delay.
(image-minimum-frame-delay): New constant.
(image-animate-timeout): Use image-minimum-frame-delay.

Add commands for navigating multi-frame images

* lisp/image.el (image-nth-frame): New, split from image-animate-timeout.
(image-animate-timeout): Use image-nth-frame.

* lisp/image-mode.el (image-goto-frame, image-next-frame)
(image-previous-frame): New commands.
(image-mode-map): Add new frame commands.

* etc/NEWS: Mention this.

* emacs-lisp/tabulated-list.el (tabulated-list-print-col):
If col-desc already has help-echo, use it.

Fixes: debbugs:13563

* lisp/net/network-stream.el (network-stream-open-starttls):
Check that response to the starttls-command is non-nil.

Fixes: debbugs:13706

url-http-wait-for-headers-change-function fix for bug#13598

* lisp/url/url-http.el (url-http-wait-for-headers-change-function):
Avoid prematurely finding the end of headers when they arrive line-by-line.

Display a mode-line frame counter for animated images

* lisp/image.el (image-current-frame): New variable.
(image-animate-timeout): Set image-current-frame.

* lisp/image-mode.el (image-mode): For animated images,
display a frame counter via mode-line-process.

* lisp/font-lock.el (lisp-font-lock-keywords-1): Add defvar-local.

* lisp/simple.el (eval-expression): Let `exp' set the mark.

Fixes: debbugs:13724

emacs-lisp/easy-mmode.el (define-globalized-minor-mode): When a global
minor mode has been enabled, call the minor mode function for a new
buffer once only, after the major mode hook, whilst allowing that hook
explicitly to disable the minor mode.
(MODE-disable-in-buffer): new (generated) function.
(disable-MODE): new (generated) buffer local variable.

ido, iswitchb, icomplete: Use `C-.' and `C-,' for cycling (Bug#13708)

* lisp/icomplete.el (icomplete-minibuffer-map): Unbind `C-s' and `C-r'.
Bind `C-.' and `C-,' to `icomplete-forward-completions' and
`icomplete-backward-completions'.

* lisp/ido.el (ido-init-completion-maps): Bind `C-.' and `C-,' to
`ido-next-match' and `ido-prev-match' resply.

* lisp/iswitchb.el (iswitchb-read-buffer): Bind `C-.' and `C-,' to
`iswitchb-next-match' and `iswitchb-prev-match' resply.

Remove unneeded bits of commit 2013-02-15T09:41:31Z!eliz@gnu.org merged from release branch.

Fix bug#13708

* lisp/icomplete.el (icomplete-minibuffer-map): Unbind `C-s' and `C-r'.
Bind `C-.' and `C-,' to `icomplete-forward-completions' and
`icomplete-backward-completions'.

* lisp/ido.el (ido-init-completion-maps): Bind `C-.' and `C-,' to
`ido-next-match' and `ido-prev-match' resply.

* lisp/iswitchb.el (iswitchb-read-buffer): Bind `C-.' and `C-,' to
`iswitchb-next-match' and `iswitchb-prev-match' resply.

* process.c (h_errno) [!HAVE_H_ERRNO]: Remove unused decl.

Fix bug #13720 with auto-save-timeout less than 4 seconds.

 src/keyboard.c (read_char): Fix calculation of auto-save time out
 when auto-save-timeout is less than 4.

Merge from emacs-24; up to 2012-12-19T19:51:40Z!monnier@iro.umontreal.ca

Fix commit 2013-02-15T09:41:31Z!eliz@gnu.org for bug #13546.

* composite.c (fill_gstring_header): Remove useless prototype.
Break long line.
* lisp.h (message_dolog, compile_pattern): Adjust prototype.
* print.c (PRINTDECLARE, print_object):
* search.c (compile_pattern, fast_looking_at, search_buffer):
(simple_search, boyer_moore, Freplace_match):
* xdisp.c (c_string_pos, number_of_chars, message_dolog):
(get_overlay_arrow_glyph_row, display_mode_element):
(decode_mode_spec_coding, message3):
* xfaces.c (face_at_string_position): Use bool for booleans.
Adjust comments.

Auto-commit of generated files.

Auto-commit of generated files.

Allow deleted processes to be reaped by SIGCHLD handler on MS-Windows.

 src/w32proc.c (new_child): Free up to 2 slots of dead processes at a
 time.  Improve diagnostics in DebPrint.
 (reader_thread): If cp->char_avail is NULL, set the FILE_AT_EOF
 flag, so that sys_select could have a chance of noticing that this
 process is dead, and call a SIGCHLD handler for it.  Improve
 diagnostics in DebPrint.
 (reap_subprocess): Reset the FILE_AT_EOF flag set by
 reader_thread.
 (sys_select): Watch a process whose procinfo.hProcess is non-NULL
 even if its char_avail is NULL.  Allows to reap subprocesses that
 were forcibly deleted by delete-process.  (Bug#13546)

Improve error reporting as part of solving bug #13546 on MS-Windows.

 src/w32.c (sys_socket, sys_bind, sys_connect, sys_gethostname)
 (sys_gethostbyname, sys_getservbyname, sys_getpeername)
 (sys_shutdown, sys_setsockopt, sys_listen, sys_getsockname)
 (sys_accept, sys_recvfrom, sys_sendto, fcntl): In case of failure,
 make sure errno is set to an appropriate value.  (Bug#13546)
 (socket_to_fd): Add assertion against indexing fd_info[] with a
 value that is out of bounds.
 (sys_accept): If fd is negative, do not set up the child_process
 structure for reading.

Merge from emacs-24; up to 2012-12-19T13:01:16Z!michael.albinus@gmx.de