chromium: Add support for grsecurity
qimageblitz: Mark stack as non-executable (patch taken from Gentoo)

This allows applications such as okular and kolourpaint to run in
grsecurity kernels, which disallow executable stacks by default.
polkit: Add grsecurity support
spl: Fix compilation with grsecurity's constify plugin and kernels < 3.8
llvm: Add support for grsecurity
gcc: Add support for grsecurity
oraclejdk7: Add support for grsecurity
spidermonkey: Add support for grsecurity
gstreamer: Add support for grsecurity
grub: Add support for grsecurity
Merge branch 't/auto-upd-grsec' into t/all
Merge branch 't/auto-upd-kernel' into t/all
Merge branch 't/grsec-module' into t/all
Merge branch 't/grsec-wip' into t/all
Merge branch 't/grsecurity' into t/all
Merge branch 't/icedtea' into t/all
Merge branch 't/inetutils' into t/all
Merge branch 't/knetwalk' into t/all
Merge branch 't/libaio' into t/all
Merge branch 't/libvirt' into t/all