Convert more cave->feat accesses to functions.
Merge branch 'cave-is' of git://github.com/elly/angband into v-master
Make Makefile.osx suppress more lines of compilation
Remove several of the cave_bold macros.

Conflicts:
	src/cave.c
	src/cave.h
Rewrite most shop-testing code to use new predicates.

Conflicts:
	src/cave.c
	src/cave.h
Changed features to use the bitflag structure.
Remove cave_floor_bold macro.

Conflicts:
	src/monster/melee2.c
Start rewriting feature predicates to use feature flags.