FREETZ_AVM_VERSION-symbols:
 * introduce some FREETZ_AVM_VERSION_FOR_KERNEL_LAYOUT_* convinience symbols - makes it much easier to see opensrc-package related commonalities
 * refs #2418


git-svn-id: http://svn.freetz.org/trunk@11975 149334a1-2f27-0410-a3b9-fc62619ac1e6