new control.c

[Rory Toma]

I've mostly completely rewritten control.c. Before I check it in, here
it is so I can get comments. I've tried to reduce the amount of
redundant code, and I belive I've reduced the number of things like
calls to get_process and the like.

-- 
Rory Toma               address@hidden
VP of Run Level 5       http://www.trs80.net
Digeo Digital           http://www.digeo.com

control.c
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