Reviewed by Adam Barth.

        webkit-patch rollout throws exception if bug is already open
        https://bugs.webkit.org/show_bug.cgi?id=38803

        This was caused by someone incorrectly wrapping the code. :p
        I'm going to have to start demanding unit tests for wrapping changes...

        I also fixed the code to be able to reopen bugs which were never confirmed.
        Before it regressed, the code would just log in that case.  Now it actually
        will reopen the bug, but there is a FIXME about how the logic is a bit backwards.

        * Scripts/webkitpy/common/net/bugzilla.py:
        * Scripts/webkitpy/common/net/bugzilla_unittest.py:
         - Yay testing!

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@59480 268f45cc-cd09-0410-ab3c-d52691b4dbfc