Expansion entirely in kwfilectx.expand()

Implement custom keyword map templates in hgrc More expensive than hardcoded keywords. But, of course, more flexible. ATM templates can only be set in hgrc, and perhaps this is enough.

Indentation cosmetics

Clean keyword arg assignment in kwfilelog.add; rename utc() to utcdate()

Init context.filectx only once per file with class kwfilectx This way context.filectx is not initialized for every keyword match.

Added tag very_cvs for changeset 2e930f842242

Very CVS-like format

Functions instead of variables in kwexpand() Should be slightly faster as filectx is asked only on demand.

Module detection cleaner and more reliable Stolen from mercurial.lsprof

Only extend sys.path if needed

Discard head of modular branch

Discard head of decodefilter branch

Make pretxncommit hook work even if extension not in hgext folder

Cosmetics: var name kwfmatchers, remove some line continuations

Add keyword; comment backwards compatible import