* subversion/include/svn_props.h
  (SVN_PROP_TXN_PREFIX,
   SVN_PROP_TXN_CLIENT_COMPAT_VERSION,
   SVN_PROP_TXN_USER_AGENT,
   SVN_PROP_REVISION_PREFIX): Mark new in 1.8.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1446161 13f79535-47bb-0310-9956-ffa450edef68