Log all processes, not just the victim

[eriksw]

When selecting a process to kill, print a line for every process instead of
just the selected victim. This follows the behavior of the kernel OOM killer,
which logs a similar whole-system snapshot of memory usage when invoked.

[eriksw]

This verbose logging is critical when trying to diagnose situations where the application you care about on a system is killed while it was using a small percentage of the system's total memory.

Aside: It's been over 10 years since I did anything in C. I'm willing to try to make any refinements necessary to get this to a mergeable state, but anything complicated might be beyond me.

[rfjakob]

Thanks, I can understand that this can be helpful. But I think this should be enabled through a --verbose flag instead of per default.

[rfjakob]

Should be enabled via verbose flag