Item12596: Bump plugin rev

The CompareRevisionsAddOn and AddOnPlugin need to have their versions
kept in sync.  Bumping this for consistency.

git-svn-id: http://svn.foswiki.org/branches/Release01x01/CompareRevisionsAddOn@17100 0b4bb1d4-4e5a-0410-9cc4-b2b747904278