ra_serf: Correctly run an update that deletes files.
ra_serf: Correctly run an update that deletes files.

* subversion/libsvn_ra_serf/update.c
  (start_report): Handle delete-entry tags in returned response.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@858444 13f79535-47bb-0310-9956-ffa450edef68

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