bkw777/mainline v1.1.2

on GitHub

dir_delete() got rid of system("rm -rf ...") and replaced with native code.

uninstall-old looks at latest installed version instead of current running version

change the logic for setting the lowest displyed version threshold
threshold_major = whechever is lower: latest_available-show_prev_majors or oldest_installed
So you can keep show_previous_N_majors set at 0 to show only the most recent kernels by default,
yet still have access to all the kernels from your oldest installed kernel and up.