Update to 20130403 snapshot and license change
    
    - Update to 20130403 snapshot
    - Use a different source tarball which doesn't contain unrelevant code (like libiberty)
    - Removed Provides: bundled(libiberty)
    - Make sure the widl tool is built for both win32 and win64 toolchains
    - Upstream has changed the license of the gendef and genidl tools to GPLv3+
      The license of the widl tool is LGPLv2+