* vc-hooks.el (vc-state): Add new state `conflict'.

* vc-hooks.el (vc-state): Add new state `conflict'.
(vc-after-save): Use when not if.
(vc-default-mode-line-string): Deal with the conflict state.
(vc-prefix-map):
(vc-menu-map): Bind vc-status instead of vc-directory.

* vc.el (vc-editable-p):
(vc-default-status-printer):
(vc-next-action): Deal with the conflict state.
(vc-mark-resolved): New function.
(vc-status-mode): Fix mode name.
(vc-default-comment-history): Use when not if.
(Todo): Add new entries, remove old ones.

* vc-cvs.el (vc-cvs-merge, vc-cvs-merge-news): Set conflict state.
(vc-cvs-parse-status):
(vc-cvs-after-dir-status):
* vc-svn.el (vc-svn-after-dir-status, vc-svn-parse-status):
Detect the conflict state.