rebase: provide detailed hint to abort message if working dir is not clean...
rebase: provide detailed hint to abort message if working dir is not clean
Detailed hint message is now provided when 'pull --rebase' operation detects
unclean working dir, for example:
abort: uncommitted changes
(cannot pull with rebase: please commit or shelve your changes first)
Added tests for uncommitted merge, and for subrepo support verifying that same
hint is also passed to subrepo state check.
