On the 'move-tracking-2' branch: Remove speculative 'overlapping ids'
code from the 'svnmover' program. It was more like clutter than useful.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/move-tracking-2@1627839 13f79535-47bb-0310-9956-ffa450edef68