Reduce the number of revprop lookups during e.g. svn ls.
Reduce the number of revprop lookups during e.g. svn ls.

* subversion/libsvn_repos/rev_hunt.c
  (svn_repos_get_committed_info): fetch the revprops only once

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1296627 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion