Minor doc fixes.

Minor doc fixes.
(vc-default-mode-line-string): Show state
`needs-patch' as a `-' too.
(vc-after-save): Call vc-dired-resynch-file.
(vc-file-not-found-hook): Ask the user whether to
check out a non-existing file.
(vc-find-backend-function): If function doesn't
exist, return nil instead of error.
(vc-call-backend): Doc fix.
(vc-prefix-map): Move the autoload from vc.el.
(vc-simple-command): Removed.
(vc-handled-backends): Docstring change.
(vc-ignore-vc-files): Mark obsolete.
(vc-registered): Check vc-ignore-vc-files.
(vc-find-file-hook, vc-file-not-found-hook): Don't check
vc-ignore-vc-files.
(vc-parse-buffer): Lobotomize the monster.
(vc-simple-command): Docstring fix.
(vc-registered): Align the way the file-handler is called with the
way the function itself works.
(vc-file-owner): Remove.
(vc-header-alist): Move the dummy def from vc.el.
(vc-backend-hook-functions): Remove.
(vc-find-backend-function): Don't try to load vc-X-hooks anymore.
(vc-backend): Reintroduce the test for `file = nil' now that I
know why it was there (and added a comment to better remember).
 Update Copyright.
(vc-backend): Don't accept a nil argument any more.
(vc-up-to-date-p): Turn into a defsubst.
(vc-possible-master): New function.
(vc-check-master-templates): Use `vc-possible-master' and allow
funs in vc-X-master-templates to return a non-existent file.
(vc-loadup): Remove.
(vc-find-backend-function): Use `require'.  Also, handle the case
where vc-BACKEND-hooks.el doesn't exist.
(vc-call-backend): Cleanup.
(vc-find-backend-function): Return a cons cell if
using the default function.
(vc-call-backend): If calling the default function, pass it the
backend as first argument.  Update the docstring accordingly.
(vc-default-state-heuristic, vc-default-mode-line-string): Update
for the new backend argument.
(vc-make-backend-sym): Renamed from vc-make-backend-function.
(vc-find-backend-function): Use the new name.
(vc-default-registered): New function.
(vc-backend-functions): Remove.
(vc-loadup): Don't setup 'vc-functions.
(vc-find-backend-function): New function.
(vc-call-backend): Use above fun and populate 'vc-functions
lazily.
(vc-backend-defines): Remove.
(vc-backend-hook-functions, vc-backend-functions)
(vc-make-backend-function, vc-call): Pass names without leading
`vc-' to vc-call-backend so we can blindly prefix them with
vc-BACKEND.
(vc-loadup): Don't load vc-X-hooks if vc-X is requested.
(vc-call-backend): Always try to load vc-X-hooks.
(vc-registered): Remove vc- in call to vc-call-backend.
(vc-default-back-end, vc-buffer-backend): Remove.
(vc-kill-buffer-hook): Remove `vc-buffer-backend' handling.
(vc-loadup): Load files quietly.
(vc-call-backend): Oops, brain fart.
(vc-locking-user): If locked by the calling user,
return that name.  Redocumented.
(vc-user-login-name): Simplify the code a tiny bit.
(vc-state): Don't use 'reserved any more.  Just use the same
convention as the one used for vc-<backend>-state where the
locking user (as a string) is returned.
(vc-locking-user): Update, based on the above convention. The
'vc-locking-user property has disappeared.
(vc-mode-line, vc-default-mode-line-string): Adapt to new
`vc-state'.
(vc-backend-functions): Removed vc-toggle-read-only.
(vc-toggle-read-only): Undid prev change.
(vc-master-templates): Def the obsolete var.
(vc-file-prop-obarray): Use `make-vector'.
(vc-backend-functions): Add new hookable functions
vc-toggle-read-only, vc-record-rename and vc-merge-news.
(vc-loadup): If neither backend nor default functions exist, use
the backend function rather than nil.
(vc-call-backend): If the function if not bound yet, try to load
the non-hook file to see if it provides it.
(vc-call): New macro plus use it wherever possible.
(vc-backend-subdirectory-name): Use neither `vc-default-back-end'
nor `vc-find-binary' since it's only called from
vc-mistrust-permission which is only used once the backend is
known.
(vc-checkout-model): Fix parenthesis.
(vc-recompute-state, vc-prefix-map): Move to vc.el.
(vc-backend-functions): Renamed `vc-steal' to
`vc-steal-lock'.
(vc-call-backend): Changed error message.
(vc-state): Added description of state `unlocked-changes'.
(vc-backend-hook-functions, vc-backend-functions):
Updated function lists.
(vc-call-backend): Fixed typo.
(vc-backend-hook-functions): Renamed vc-uses-locking
to vc-checkout-model.
(vc-checkout-required): Renamed to vc-checkout-model.
Re-implemented and re-commented.
(vc-after-save): Use vc-checkout-model.
(vc-backend-functions): Added `vc-diff' to the list
of functions possibly implemented in a vc-BACKEND library.
(vc-checkout-required): Bug fixed that caused an error to be
signaled during `vc-after-save'.
(vc-backend-hook-functions): `vc-checkout-required'
updated to `vc-uses-locking'.
(vc-checkout-required): Call to backend function
`vc-checkout-required' updated to `vc-uses-locking' instead.
(vc-parse-buffer): Bug found and fixed.
(vc-backend-functions): `vc-annotate-command',
`vc-annotate-difference' added to supported backend functions.
 vc-state-heuristic added to
vc-backend-hook-functions.
 Implemented new state model.
(vc-state, vc-state-heuristic, vc-default-state-heuristic): New
functions.
(vc-locking-user): Simplified.  Now only needed if the file is
locked by somebody else.
(vc-lock-from-permissions): Removed.  Functionality is in
vc-sccs-hooks.el and vc-rcs-hooks.el now.
(vc-mode-line-string): New name for former vc-status.  Adapted.
(vc-mode-line): Adapted to use the above.  Removed optional
parameter.
(vc-master-templates): Is really obsolete.
Commented out the definition for now.  What is the right procedure
to get rid of it?
(vc-registered, vc-backend, vc-buffer-backend, vc-name): Largely
rewritten.
(vc-default-registered): Removed.
(vc-check-master-templates): New function; does mostly what the
above did before.
(vc-locking-user): Don't rely on the backend to set the property.
(vc-latest-version, vc-your-latest-version): Removed.
(vc-backend-hook-functions): Removed them from this list, too.
(vc-fetch-properties): Removed.
(vc-workfile-version): Doc fix.
(vc-consult-rcs-headers):
Moved into vc-rcs-hooks.el, under the name
vc-rcs-consult-headers.
(vc-master-locks, vc-master-locking-user):
Moved into both
vc-rcs-hooks.el and vc-sccs-hooks.el.  These properties and access
functions are implementation details of those two backends.
(vc-parse-locks, vc-fetch-master-properties): Split
into back-end specific parts and removed.  Callers not updated
yet; because I guess these callers will disappear into back-end
specific files anyway.
(vc-checkout-model): Renamed to vc-uses-locking.
Store yes/no in the property, and return t/nil.  Updated all
callers.
(vc-checkout-model): Punt to backends.
(vc-default-locking-user): New function.
(vc-locking-user, vc-workfile-version): Punt to backends.
(vc-rcsdiff-knows-brief, vc-rcs-lock-from-diff)
(vc-master-workfile-version): Moved from vc-hooks.
(vc-lock-file): Moved to vc-sccs-hooks and renamed.
(vc-handle-cvs, vc-cvs-parse-status, vc-cvs-status):
Moved to vc-cvs-hooks.
 Add doc strings in various places.  Simplify the
minor mode setup.
(vc-handled-backends): New user variable.
(vc-parse-buffer, vc-insert-file, vc-default-registered): Minor
simplification.
(vc-backend-hook-functions, vc-backend-functions):
New variable.
(vc-make-backend-function, vc-loadup, vc-call-backend)
(vc-backend-defines): New functions.
 Various doc fixes.
(vc-default-back-end, vc-follow-symlinks): Custom fix.
(vc-match-substring): Function removed.  Callers changed to use
match-string.
(vc-lock-file, vc-consult-rcs-headers, vc-kill-buffer-hook):
Simplify.
 vc-registered has been renamed
vc-default-registered.  Some functions have been moved to the
backend specific files.  they all support the
vc-BACKEND-registered functions.
 This is 1998-11-11T18:47:32Z!kwzh@gnu.org from the emacs sources