Make the pre-revprop-change hook template more friendly by printing an error message if the user tries to modify revision properties other than svn:log.
Make the pre-revprop-change hook template more friendly by printing
an error message if the user tries to modify revision properties other
than svn:log.

* subversion/libsvn_repos/repos.c
  (create_hooks): Let the template print an error message to standard
  error before exiting with exit status 1.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion