Test other angle unit ranges.
Test other angle unit ranges.

svn path=/trunk/libcss/; revision=6192

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