TODO: Lua support wants lua5.1.pc >= 5.1, which isn't available
    
      (only lua.pc 5.2.x exists).
    - Add new BUGS file to documentation.
    - Drop the LCMS1 bcond.
    - Some patches not needed anymore.
    - Drop old conditional for desktop file vendor.
    - Update to 1.2 from gitorious including the merged LCMS2 patch (post-1.2).
      No official tarball release yet.