- Split shared libraries into a -libs subpackage to properly handle
        multilib setups. (This precludes the further need to %ghost the
        byte-compiled themeupdate scripts which was introduced in the previous
        release.)
    - Fix handling of the startup_notification build conditional. It'll
        actually work properly now. :)
    - Remove the hardcoded RPATH using some sed invocations from the packaging
        guidelines.