mod_dav_svn: Advertise if server supports sending properties in update 
report in skelta mode.

* subversion/include/svn_dav.h
  (SVN_DAV_NS_DAV_SVN_INLINE_PROPS): New.

* subversion/libsvn_ra_serf/options.c
  (capabilities_headers_iterator_callback): Set 
   session->supports_inline_props to TRUE if server supports inline props.

* subversion/libsvn_ra_serf/ra_serf.h
  (svn_ra_serf__session_t): Add supports_inline_props.

* subversion/mod_dav_svn/version.c
  (SVN_DAV_NS_DAV_SVN_INLINE_PROPS): Advertise that inlined props are 
   supported by server.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1430185 13f79535-47bb-0310-9956-ffa450edef68