New smxi option set default startup/display manager runlevel

[techAdmin]

New option: in post du options, miscellaneous tweaks, advanced tweaks, set default runlevel.

This lets you override or restore system defaults. This is especially useful for debian systems, where everything defaults to 2, which means you can't easily boot to init 2 no x or display manager.

Or you can set your system to use whatever you want, but since debian systems all default to 2-5, you can just set it to 3.