Fix the merge_tests-73(reverse_merge_prop_add_on_child).
Fix the merge_tests-73(reverse_merge_prop_add_on_child).

See http://subversion.tigris.org/issues/show_bug.cgi?id=2971

* subversion/tests/cmdline/merge_tests.py
  (reverse_merge_prop_add_on_child): Fix the expectation.
  (test_list): Remove Skip marker from 'reverse_merge_prop_add_on_child' as 
   fix to issue 2969 should have fixed this.

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