search for: find_kernel_from_env_var

This patch series fixes several problems in the way that supermin handles kernels. The most pressing problem is that supermin doesn't handle bogus vmlinuz files which aren't actual kernels. Along the way there is a lot of clean up. The patches look much better if you view them with ‘-w’. This series will require plenty of time to be tested in Fedora, especially on non-x86 arches.