Add extension for filewise RCS-keyword expansion in working dir
- keywords are only expanded working dir, not in change history
- completely customizable keywords/expansions based on hg templates
- intrusiveness/slowdown can be reduced by specifying precise [keyword]
file patterns
- can be turned off/on anytime
- changesets can be exchanged regardless of remote/local keyword settings
context: fix filectx.parents() bug introduced when editing
180a3eee4b75
Fix copies reporting in log and convert.
If copy logged in file revision, we report copy for changeset only
if file revisions linkrev points back to the changeset in question
or both changeset parents contain different file revisions.
This fixes extra copies reported when executable bit was changed for
previously copied file.