[tools] cloog: update to 0.18.1

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39067 3c298f89-4303-0410-b956-a3cf2f4a3e73
[tools] ppl: update to 1.1

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39068 3c298f89-4303-0410-b956-a3cf2f4a3e73