Item12407:  Preparing for release

Update change log
Convert to simple version string
Sync the plugin and contrib
Eliminate DEPENDENCES now that simple version string is used.
Update copyrights

git-svn-id: http://svn.foswiki.org/trunk/CompareRevisionsAddOn@17634 0b4bb1d4-4e5a-0410-9cc4-b2b747904278