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Closes #185.
Closes #190.

Read OOM data only if column is enabled.
Make sort ordering more consistent. Closes #182.

Conflicts:
	linux/LinuxProcess.c

Conflicts:
	Process.c
	Process.h
	ProcessList.c
	ScreenManager.c
	linux/LinuxProcessList.c

Kinda runs, but functionality from the original main loop
is still missing. Patience.

This is a work-in-progress, code is currently broken.
(Some actions, and notably, the header, are missing.)

We'll just isolate the platform-dependent bit.

Set up environment to move other meters.