ra_serf: Correctly retrieve the comment field from the lock.
ra_serf: Correctly retrieve the comment field from the lock.

Now passes lock_tests #21 (examine the fields of a lock from a URL).

* subversion/libsvn_ra_serf/locks.c
  (lock_state_e): Add COMMENT state.
  (lock_info_t): Remove owner, creation_date, lock_token, comment as they
  are now unused fields.
  (push_state, cdata_lock): Add COMMENT state.
  (start_lock): Map 'owner' DAV field to the COMMENT state.
  (end_lock): Fill the ->comment field in the lock.
  (create_lock_body): Use ->lock->comment instead of ->comment.
  (svn_ra_serf__lock): Do not set ->comment.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@862290 13f79535-47bb-0310-9956-ffa450edef68

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