[PREVIEW] -M command line option

Just to kick this further along. I've put together the proposal in patch
form.

Anyone game to test the SMP support is working properly with "-M
foreground" when this is applied?

I'm also beginning to think we are needing to add getopts_long() support
and just use "--foreground" for the no-daemon mode.
 If the attached patch actually works regardign SMP and we agree on the
user-visible bit I'm happy to add that update for the command line and
commit.

Amos