* lisp/vc/diff-mode.el (diff-refine-changed): Rename from
`diff-refine-change' for consistency with `diff-changed'.
(diff-refine-change): Add obsolete face alias. 
* lisp/vc/smerge-mode.el (smerge-refined-changed): Rename from
`smerge-refined-change'.
(smerge-refined-change): Add obsolete face alias.
[Backport]
* lisp/vc/vc-hg.el (vc-hg-log-graph): New var.
(vc-hg-print-log): Use it.
(vc-hg-root-log-format): Include branch name and bookmarks; ignore
graph output.