Handle as much of clip as we can
Handle as much of clip as we can

svn path=/trunk/libcss/; revision=6433

servo/libcss,prepare/netsurf_libcss,servo/libcss,zhuyadong/libcss,servo/libcss,prepare/netsurf_libcss,zhuyadong/libcss,zhuyadong/libcss,prepare/netsurf_libcss