On the python-mergeinfo-bindings branch: Work towards issue #2878 and
issue #3004.  All tests now pass.

* subversion/bindings/swig/python/tests/mergeinfo.py
  (test_mergeinfo_sort): Implement test method.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/python-mergeinfo-bindings@867760 13f79535-47bb-0310-9956-ffa450edef68