Fix test data -- non integer values will always be printed to 3dp.
Fix test data -- non integer values will always be printed to 3dp.

svn path=/trunk/libcss/; revision=6207

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