Revision 1679240

Following up on r1658406, rework the recently added svnmucc tests.

There is a behavior change in how svnmucc processes actions, and this change
happened between 1.8.13 and 1.9.0-rc1.  Some action sequences with deletes
and moves that used to work in 1.8.13 will trigger an error in 1.9.0-rc1 and
later versions.  Based on the discussion in <dev@subversion.apache.org>, they
probably indicate a mistake and could lead to unexpected results for the end
user.  We now prohibit them and accept the possible incompatibility outcomes.

I turned the corresponding XFail() tests into a single passing test that
specifies the current behavior, i.e., svnmucc returning errors.  Related
discussion can be found in http://svn.haxx.se/dev/archive-2015-05/0038.shtml
(Subject: "Re: Issue 4579 / svnmucc fails to process certain deletes").

* subversion/tests/cmdline/svnmucc_tests.py:
  (modify_and_delete_file, propset_and_delete_file, delete_and_delete_file):
   Remove.  Take all the interesting command sequences and consolidate them
   in ...
  (prohibited_deletes_and_moves): ...this new test.  Populate it with a
   couple of move action sequences that we currently disallow.
  (test_list): Track the test changes.