* subversion/libsvn_wc/log.c (log_do_modify_entry): Don't error on non-existing   prop-base.
* subversion/libsvn_wc/log.c (log_do_modify_entry): Don't error on non-existing
  prop-base.

  THIS IS A PARTIAL COMMIT! SORRY :-(

  THE REMAINDER OF THIS COMMIT IS COMMITTED IN r17187,
    including the log message.

  All other changes than the one above fall
  in the category 'Adjust callers' in that commit message.



git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@857260 13f79535-47bb-0310-9956-ffa450edef68

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