Remove webkitgtk-2.5.90-cloop_fix.patch and
    
      webkitgtk-2.8.0-page_size_align.patch. These have been broken for ages.
    - Remove webkitgtk-2.8.0-s390_fixes.patch since this is a patch for bmalloc, but
      we disable bmalloc on s390.
    - Updated webkitgtk-2.11.2-youtube.patch by Mario, now slightly less awful.
    - Don't request hardened build, it's the default.
    - Use public USE_SYSTEM_MALLOC option instead of unsupported DISABLE_BMALLOC.
    - lldb is not bundled anymore.