Fix one and a bit lock tests when run against a 1.6 svnserve.
Fix one and a bit lock tests when run against a 1.6 svnserve.

* subversion/tests/cmdline/lock_tests.py
  (lock_file): Allow unquoted username in error message.
  (lock_path_not_in_head): Don't require literal 'warning' in error
   message.  This test still fails with a 1.6 svnserve since the
   client handles the server response differently and returns a
   different exit value.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1143369 13f79535-47bb-0310-9956-ffa450edef68

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