* add-log.el, cvs-status.el, diff.el, diff-mode.el, ediff-diff.el,
* ediff.el, ediff-help.el, ediff-hook.el, ediff-init.el,
* ediff-merg.el, ediff-mult.el, ediff-ptch.el, ediff-util.el,
* ediff-vers.el, ediff-wind.el, emerge.el, log-edit.el, log-view.el,
* pcvs-defs.el, pcvs.el, pcvs-info.el, pcvs-parse.el, pcvs-util.el,
* smerge-mode.el, vc-annotate.el, vc-arch.el, vc-bzr.el, vc-cvs.el,
* vc-dav.el, vc-dir.el, vc-dispatcher.el, vc.el, vc-git.el,
* vc-hg.el, vc-hooks.el, vc-mtn.el, vc-rcs.el, vc-sccs.el, vc-svn.el:
Move files to the "vc" subdirectory.

* log-edit.el (log-edit-extra-flags): New variable.
(log-edit): Add new argument MODE.  Use that mode when non-nil
instead of the log-view-mode.
(log-view-process-buffer): New function.

* vc.el: Document that the checkin method takes optional
arguments.  Document new backend specific method: log-view-mode.
(vc-default-log-edit-mode): New function.
(vc-checkin): Use a backend specific log-view-mode.
Pass extra arguments to the checkin method.
(vc-modify-change-comment): Pass a dummy extra argument.

* vc-dispatcher.el (vc-log-edit): Add a mode argument, pass it to
log-edit.
(vc-start-logentry): Add a mode argument, pass it to vc-log-edit.
(vc-finish-logentry): Process the log buffer before passing it
down.  Pass log-edit-extra-flags.

* vc-bzr.el (vc-bzr-checkin): Pass extra arguments to the commit
command.
(log-edit-extra-flags, log-edit-before-checkin-process): New declarations.

* vc-hg.el (vc-hg-checkin): Pass extra arguments to the commit
command.
(log-edit-extra-flags, log-edit-before-checkin-process): New declarations.
(vc-hg-log-edit-mode): New derived mode.

* vc-arch.el (vc-arch-checkin):
* vc-cvs.el (vc-cvs-checkin):
* vc-git.el (vc-git-checkin):
* vc-mtn.el (vc-mtn-checkin):
* vc-rcs.el (vc-rcs-checkin):
* vc-sccs.el (vc-sccs-checkin):
* vc-svn.el (vc-svn-checkin): Add an optional ignored argument.

* vc.el (print-log): Add a new argument: START-REVISION.
(vc-print-log-internal): Add a new optional argument and
pass it to the backend.
(vc-print-log, vc-print-root-log): Adjust callers.
* vc-annotate.el (vc-annotate-show-log-revision-at-line): If a
buffer already displays the requested log entry, use it.
Otherwise display only the log entry in question.
* vc-svn.el (vc-svn-print-log):
* vc-mtn.el (log-view-file-re):
* vc-hg.el (vc-hg-state):
* vc-git.el (vc-git-print-log): Add support for new argument START-REVISION.
(vc-git-show-log-entry): Return t on success.
* vc-bzr.el (vc-bzr-print-log): Add support new argument START-REVISION.
(vc-bzr-show-log-entry): Return t on success.
* vc-rcs.el (vc-rcs-print-log):
* vc-sccs.el (vc-sccs-print-log):
* vc-cvs.el (vc-cvs-print-log): Add new argument, ignore it.

(vc-print-log-internal): Insert buttons to request more entries
when limiting the output.

* vc-sccs.el (vc-sccs-print-log):
* vc-rcs.el (vc-rcs-print-log):
* vc-cvs.el (vc-cvs-print-log):
* vc-git.el (vc-git-print-log): Return 'limit-unsupported when
LIMIT is non-nil.

(vc-print-log, vc-print-root-log): Add new argument LIMIT.  Set it
when using a prefix argument.
(vc-print-log-internal): Add new argument LIMIT.

* vc-svn.el (vc-svn-print-log):
* vc-mtn.el (vc-mtn-print-log):
* vc-hg.el (vc-hg-print-log):
* vc-bzr.el (vc-bzr-print-log): Add new optional argument LIMIT,
pass it to the log command when set. Make the BUFFER argument
non-optional.

* vc-sccs.el (vc-sccs-print-log):
* vc-rcs.el (vc-rcs-print-log):
* vc-git.el (vc-git-print-log):
* vc-cvs.el (vc-cvs-print-log): Add new optional argument LIMIT,
ignore it.  Make the BUFFER argument non-optional

argument.  Add a new method: root.

* vc-hooks.el (vc-prefix-map, vc-menu-map): Add bindings for
vc-print-root-log and vc-print-root-diff.

* vc-bzr.el (vc-bzr-log-view-mode, vc-bzr-print-log):
* vc-git.el (vc-git-print-log, vc-git-log-view-mode):
* vc-hg.el (vc-hg-print-log, vc-hg-log-view-mode): Add support for
short logs.

* vc-cvs.el (vc-cvs-print-log):
* vc-mtn.el (vc-mtn-print-log):
* vc-rcs.el (vc-rcs-print-log):
* vc-sccs.el (vc-sccs-print-log):
* vc-svn.el (vc-svn-print-log): Add an optional argument shortlog
that is ignored for now.

* vc-rcs.el (vc-rcs-print-log-cleanup): ... here.  New function.
(vc-rcs-print-log): Use it.

* vc-cvs.el (vc-cvs-print-log): Use vc-rcs-print-log-cleanup.