* subversion/libsvn_ra_serf/options.c
  (): Include svn_hash.h.
  (capabilities_headers_iterator_callback, options_response_handler,
   svn_ra_serf__has_capability): Replace apr_hash_set(APR_HASH_KEY_STRING) 
   with svn_hash_sets() macro.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1444837 13f79535-47bb-0310-9956-ffa450edef68