Followup r1004727: Fix obvious thinko that broke tests.
Followup r1004727: Fix obvious thinko that broke tests.

* subversion/svn/main.c
  (main): Treat singleton '-c' revisions as forward, not reverse, range.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1004746 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion