ra_serf: Pass commit test #27 (commit with conflicts and check txn in repo) and fix a cast warning.
ra_serf: Pass commit test #27 (commit with conflicts and check txn in repo)
and fix a cast warning.

* subversion/libsvn_ra_serf/commit.c
  (setup_copy_headers): Cast to char* as we know we'll lose const.  Blame apr.
  (close): Don't abort() on error, but return something.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@859048 13f79535-47bb-0310-9956-ffa450edef68

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