Switch over to the new xml parsing context.
Switch over to the new xml parsing context.

* subversion/libsvn_ra_serf/get_deleted_rev.c:
  (drev_state_e): drop the typedef. rename NONE to INITIAL. add REPORT.
  (drev_context_t): remove POOL and DONE members
  (getdrev_ttable): new transition table
  (push_state, start_getdrev, end_getdrev, cdata_getdrev): removed; obsolete.
  (getdrev_closed): new callback to collect the data
  (svn_ra_serf__get_deleted_rev): drop the old parsing stuff and
    switch to the new v2 system. switch to run_one()

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