Compose {min,max}{width,height}
Compose {min,max}{width,height}

svn path=/trunk/libcss/; revision=6701

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