When using a stethoscope or wand of probing on a long worm, report
the number of segments it has in the feedback given.
Some of the extra bhitpos and/or notonhead assigments may not be
necessary. They were added when I was trying to figure out the
question of why probing of a tail segment revealed a long worm's
inventory even though the code explicitly prevents that. (Answer:
it didn't; I had misinterpreted bz 12 to think that that was what
was being reported. You need to use wand of probing--or "insigtful"
Magicbane hit--on the head in order to see its inventory or be told
"not carrying anything".)