[MPlayer-dev-eng] Subversion unversioned properties

[Diego Biurrun]

Yo,

I just added support for modifying unversioned properties including mail
notification.  This allows retroactively editing commit log messages as
described in the Subversion book:

 http://svnbook.red-bean.com/en/1.2/svn.advanced.props.html#svn.advanced.props.manip

An example command line would be

  svn propset svn:log -r12345 --revprop

Diego