Using cl macros push, pop, when, unless throughout

Using cl macros push, pop, when, unless throughout
the file. This is not further mentioned in this ChangeLog entry.
Documentation largely updated.  Parser rewritten for better
Multifile Document processing.  Macros with naked label arguments
supported.  Some Mule related changes.
(reftex-default-label-alist-entries): Customization type is now
computed from reftex-label-alist-builtin. Enumerate has new
typekey `i'.  `n' is now reserved for footnotes etc.
(reftex-label-alist): Introduced default regular expressions.
Customization type is now computed from
reftex-label-alist-builtin.
(reftex-label-menu-flags): New flag for showing file borders.
(reftex-refontify-context): New option.
(reftex-bibfile-ignore-list): Now a user option (was: variable).
(reftex-cite-format): Now a user option (was: variable).
Customization type is now computed from
reftex-cite-format-builtin.
(reftex-comment-citations): Now a user option (was: variable).
(reftex-toc-follow-mode): Now a user option (was: variable).
(reftex-optimizations-for-large-documents): New custom group.
(reftex-keep-temporary-buffers): 1 as additional value.
(reftex-initialize-temporary-buffers): New option.
(reftex-enable-partial-scans): New option.
(reftex-save-parse-info): New option.
(reftex-plug-into-AUCTeX): Now a user option (was: variable).
(reftex-auto-show-entry): New value 'copy allowed.
(reftex-load-hook): Now a declared variable.
(reftex-mode-hook): Now a declared variable.
(reftex-label-numbers-symbol): Variable removed.
(reftex-list-of-labels-symbol): Variable removed.
(reftex-label-numbers-symbol): Variable removed.
(reftex-bibfile-list-symbol): Variable removed.
(reftex-docstruct-symbol): New variable (buffer-local).
(reftex-master-include-list): Variable removed.
(reftex-make-master-buffer): Function removed.
(reftex-make-master-buffer-hook): Hook removed.
(reftex-insert-buffer-or-file): Function removed.
(reftex-parse-document): Function adapted to new parser.
(reftex-access-scan-info): Changed to fit new parser.  Now detects
changes in label-alist related variables automatically.
(reftex-parse-one,reftex-parse-all): New functions.
(reftex-all-document-files): New function.
(reftex-grep-document,reftex-search-document,
reftex-query-replace-document): Now use
`reftex-all-document-files'.
(reftex-section-or-include-regexp): New variable.
(reftex-everything-regexp): New variable.
(reftex-find-label-regexp-format): New variable.
(reftex-find-label-regexp-format2): New variable.
(reftex-do-parse): New function.
(reftex-is-multi): New function.
(reftex-parse-from-file): New function.
(reftex-locate-bibliography-files): New function.
(reftex-last-assoc-before-elt): New function.
(reftex-replace-label-list-segment): New function.
(reftex-silence-toc-markers): New function.
(reftex-access-parse-file): New function.
(reftex-label): Now uses `reftex-where-am-I'.
(reftex-offer-label-menu): New keys `%' and `i' and `r'.
(reftex-select-item): Recursive edit moved to key `e'.  New key
`x' for external documents.  Works now also with nin-nil
pop-frame.
(reftex-offer-label-menu): Now uses `reftex-where-am-I'.
(reftex-make-and-insert-label-menu): More efficient, allow
optional extra fontification.
(reftex-find-nearby-label): Function removed.
(reftex-scan-buffer-for-labels): Function removed.
(reftex-section-info): New function.
(reftex-nth-parens-substring): Renamed to reftex-nth-arg.  Return
nil when not enough args are present.
(reftex-move-over-touching-args): New function.
(reftex-where-am-I): New function.
(reftex-nth-arg-wrapper): New function.
(reftex-select-label-callback): Deal with special macros as well.
(reftex-find-duplicate-labels): Ignore special entries in
docstruct.
(reftex-kill-temporary-buffers): New arg buffer.
(reftex-show-entry): Copy context when necessary.
(reftex-toc): New key `R', use reftex-where-am-I.
(reftex-nearest-section): Use reftex-where-am-I.
(reftex-toc-visit-line): Completely rewritten.  Uses markers and
several backup methods.
(reftex-citation): Recursive edit moved to `e' key.
(reftex-scan-buffer): Function removed.
(reftex-get-bibfile-list): Changed to work with chapterbib
package.
(reftex-find-tex-file): New function.
(reftex-find-files-on-path): Now first looks for file with
additional .tex extension, then for the naked file name.
(reftex-citation): Split into reftex-citation and
reftex-do-citation.
(reftex-do-citation): Recursive edit now on `e' key.
(reftex-what-macro): Allow white space between macro arguments.
(reftex-allow-for-ctrl-m): Renamed to
`reftex-make-regexp-allow-for-ctrl-m'.
(reftex-nearest-match): New function.
(reftex-auto-mode-alist): New function.
(reftex-make-desparate-section-regexp): New funtion.
(reftex-get-file-buffer-force): Rewritten to use new variable
`reftex-initialize-temporary-buffers'.
(reftex-label-alist-builtin): Use abbreviated regexps.
(reftex-label-mac-list): New variable.
(reftex-parse-args): New function.
(easy-menu-define): Menu extended. Some parts are now computed.
from the user options.
(reftex-move-to-next-arg,reftex-move-to-previous-arg) New
functions.  Now we can parse macros with distributed arguments.
(reftex-goto-label): Function removed.
(reftex-position-cursor): Function removed.
(reftex-item): Function removed.
(reftex-add-to-label-alist): No longer autoloaded.
(reftex-toc-indent): Constant removed.
(reftex-label-indent): Constant removed.
(reftex-context-indent): Constant removed.
(reftex-match-string): New function.
(reftex-memory): New variable
(reftex-reset-mode): No longer hacks local variables.  Now resets
path variables as well.
(reftex-truncate): New functions, to make RefTeX work with Mule.
(reftex-fp): New macro, to make RefTeX work with Mule.
(reftex-format-bib-entry): Now uses `reftex-truncate' to truncate
author names.  `extra' and `title' are no longer truncated at all.
(reftex-all-assq): New function.
(reftex-view-crossref): Works now also if mouse click is on macro.
(reftex-context-substring): Now returns substring without text
properties.
(reftex-tex-path,reftex-bib-path): New variables.
(reftex-split): Function replaced with builtin `split-string'.
(reftex-find-bib-file): New function.
(reftex-find-files-on-path): Function removed.
(reftex-find-file-on-path): New function.
(reftex-access-search-path,reftex-parse-colon-path,
reftex-recursive-directory-list,reftex-expand-path): New
functions, dealing with recursive TEXINPUTS and BIBINPUTS
definitions.