Switch getdate over to the new xml parsing system.
Switch getdate over to the new xml parsing system.

* subversion/libsvn_ra_serf/getdate.c:
  (date_state_e): drop the typedef. rename NONE to INITIAL. add the
    REPORT state.
  (date_context_t): drop the DONE member
  (date_ttable): new transition table
  (start_getdate, end_getdata, cdata_getdate): removed. obsolete.
  (svn_ra_serf__get_dated_revision): drop old parsing stuff. switch to
    the new parser. use run_one().

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