Don't allow arbitrary strings for the value of the 'SVNPathAuthz' directive.
Don't allow arbitrary strings for the value of the 'SVNPathAuthz' directive.

* subversion/mod_dav_svn/mod_dav_svn.c
  (SVNPathAuthz_cmd): Error out when value not in ['on', 'off', 'short_circuit'].


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1141291 13f79535-47bb-0310-9956-ffa450edef68

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