Fix to get the last testing version of grsec.

$ curl http://grsecurity.net/test.php | grep -o 'grsecurity-[.0-9]*-[.0-9]*-[0-9]*\.patch' | sort -ru
grsecurity-3.0-3.2.54-201401272346.patch
 -> http://grsecurity.net/stable/grsecurity-3.0-3.2.54-201401272346.patch
grsecurity-3.0-3.13.0-201401272348.patch
 -> The version we want.
grsecurity-2.9.1-2.6.32.61-201312262018.patch

$ curl http://grsecurity.net/test.php | grep -o 'test/grsecurity-[.0-9]*-[.0-9]*-[0-9]*\.patch' | sort -ru
test/grsecurity-3.0-3.13.0-201401272348.patch