Followup to r1291520, avoid unnecessary sorting.
Followup to r1291520, avoid unnecessary sorting.

* subversion/tests/cmdline/svntest/actions.py
  (run_and_verify_merge): Compare sets rather than sorting.

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