Minor refactor of the APC file, turned biteshifts into the BITFLAG
macro, reordering.
Added APCs maplints.
Fixed maps to pass the maplints.
APCs now draw time-constant power.
Removed power objects handling code, only the powersink existed that
used it.
Refactored powersink to use the processing subsystem, made it
time-constant, DMDoc'd.
Made powersinks drain power from an APC faster.