On the 'move-tracking-2' branch: Accept revision keyword 'base'.
On the 'move-tracking-2' branch: Accept revision keyword 'base'.

* subversion/svnmover/svnmover.c
  (execute): Accept revision keywords 'base' (and 'committed') to mean
    the base revision of the (simulated) WC.

git-svn-id: 486ec3464084f62cfe8608152673c827b947faa2@1683145 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion