Following up on r1550765, don't pull in the working copy support to test
svnmucc like operations. Use more of the new api instead.

* build.conf
  (mtcc-test): Remove dependency. This fixes the Windows shared library build.

* subversion/libsvn_client/mtcc.c
  (commit_directory): Add session url argument and use it to construct full
    urls to copy from.
  (svn_client_mtcc_commit): Update caller.

* subversion/tests/libsvn_client/mtcc-test.c
  (includes): Remove libsvn_wc/utils.h.
  (verify_mtcc_commit): New helper function.
  (create_greek_repos): Remove copy&pasted function.
  (make_greek_tree): New function.

  (test_mkdir): Don't create a wc sandbox. Use a few other names.
  (test_mkgreek): New test.
  (test_funcs): Add test_mkgreek.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1550783 13f79535-47bb-0310-9956-ffa450edef68