Push grsec-modules into iso
I am using the flashcache-grsec package and running alpine from tmpfs. Sometimes, I miss the new alpine release. If there was an update of the linux kernel in that time, I can not upgrade anymore, because the downloadable flashcache-grsec package was compiled against the new linux kernel and is maybe not useable with the iso release linux kernel.
(from redmine: issue id 2447, created on 2013-12-01, closed on 2013-12-10)