Turning off light sources doesn't always tell you if the room goes dark

[eriktorbjorn]

The default V-LAMP-OFF routine calls SAY-IF-NOT-LIT to tell you if turning off e.g. the flashlight makes the room go dark.

This should also happen for other light sources that define their own LAMP-OFF handling. At the very least:

• COMPUTER-F
• SLIDE-PROJECTOR-F
• FILM-PROJECTOR-F

[eriktorbjorn]

Other functions that can remove the last light source from a room:

• BURN-THROUGH-ROPE
• BRICK-HOLE-F