Remove parts of patches from http://gitorious.org/xaw3d which we already have
    
    We already have some parts of the patches from http://gitorious.org/xaw3d
    in some other patches (mostly in the patches we took from Debian). Remove
    those bits from Xaw3d-1.5E-secure.patch and Xaw3d-1.5E-thumb.patch, so that
    the rest can be applied without conflicts.