* derek-elbereth:
ensure that the 'safe' objects remain safe
finish up the changes to trigger erosion on use
initial pass for toning down Elbereth
Conflicts:
dat/castle.des
dat/sokoban.des
include/extern.h
src/engrave.c
src/mklev.c
src/monmove.c
src/zap.c
since Elbereth doesn't work if you're not on the square anymore, we need
to make sure that critters are discouraged from grabbing the sokoban
prize or the castle wand.
also, fix up the level compiler makefiles so that uncommenting the
YACC/LEX definitions (presuming you have the right tools installed)
works properly.
