When a chameleon/doppelganger/sandestin took vampire or vampire lord
shape, it stopped taking on new shapes. Vampire shapeshifting was
being applied to all vampires rather than just to is_vampshifter().
When is_vampshifter() is false, the vampire is some other shapeshifter
or Protection_from_shape_changers is in effect, so vampire shifting
doesn't apply.
While testing, I noticed that vampires/lords only turned into bats/
wolves during initial creation. They did turn into fog clouds in
order to pass closed doors but the other alternate forms were ignored.
That's fixed too.
885de116e1