Part of issue 1162.  Don't destroy a file's prop-time during a commit that doesn't modify properties.
Part of issue 1162.  Don't destroy a file's prop-time during a
commit that doesn't modify properties.

* subversion/libsvn_wc/log.c (log_do_committed): Don't set prop-time
  or text-time to zero.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@845277 13f79535-47bb-0310-9956-ffa450edef68

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