Enable a few more symlink tests on operating systems where we don't support symlinks.
Enable a few more symlink tests on operating systems where we don't support
symlinks.

* subversion/tests/cmdline/special_tests.py
  (general_symlink): Remove skip, and create fake symlink if necessary. Update
    expected result for !posix.
  (copy_tree_with_symlink,
   remove_symlink,
   merge_symlink_into_file,
   merge_file_into_symlink): Remove skip and create fake symlink.
  (diff_symlink_to_dir): As above, but also assume that our internal symlink
    representation is not os specific.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1407074 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion