Fix WebKit2 expected results search paths for Mac and Qt under new-run-webkit-tests
        https://bugs.webkit.org/show_bug.cgi?id=64056

        Reviewed by Adam Barth.

        This fixes the MacPort's version of baseline_search_path to include
        wk2 fallback like WebKitPort's does.  This also re-works the QtPort
        to set self._name (as other ports do) so that WebKitPort's default
        implementations will understand Qt operating system flavors correctly
        (including when running wk2 tests).

        In trying to test this, I realized that nearly all of our port-tests
        use the default FileSystem(), User() and Executive() objects, which
        is really bad, because they expose details of your system in the unittest results!

        Once I fixed many of the Port() calls to pass MockFileSystem(), then
        MacPort.test_tests_for_other_platforms started failing, and I had to
        teach MockFileSystem.glob how to handle directories to make it work again.

        I removed the useless PortTestCase.test_baseline_search_path and replaced
        it with more useful test_baseline_search_path tests in MacPortTest and QtPortTest.

        * Scripts/webkitpy/common/config/ports.py:
        * Scripts/webkitpy/common/system/filesystem_mock.py:
        * Scripts/webkitpy/layout_tests/port/chromium_linux.py:
        * Scripts/webkitpy/layout_tests/port/chromium_unittest.py:
        * Scripts/webkitpy/layout_tests/port/mac.py:
        * Scripts/webkitpy/layout_tests/port/mac_unittest.py:
        * Scripts/webkitpy/layout_tests/port/port_testcase.py:
        * Scripts/webkitpy/layout_tests/port/qt.py:
        * Scripts/webkitpy/layout_tests/port/test_files.py:
        * Scripts/webkitpy/layout_tests/port/win.py:
        * Scripts/webkitpy/to_be_moved/deduplicate_tests.py:
        * Scripts/webkitpy/tool/mocktool.py:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@90543 268f45cc-cd09-0410-ab3c-d52691b4dbfc