A minor dumpfilter optimization.
A minor dumpfilter optimization.

* subversion/svndumpfilter/main.c

  (parse_baton_initialize): Don't waste time attempting to renumber
   revisions if nothing can possibly be renumbered, i.e. ignore
   svndumpfilter --renumber-revs if --drop-empty-revs is not also
   specified.  See http://svn.haxx.se/dev/archive-2010-04/0621.shtml


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@939456 13f79535-47bb-0310-9956-ffa450edef68

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