* stabsread.c: Remove most uses of lookup_fundamental_type.

	* stabsread.c: Remove most uses of lookup_fundamental_type.
	(define_symbol): Use read_type for type of enum constant,
	not just read_type_number.  Also don't call error().
	(define_symbol): For unrecognized constant type, one complaint (the
	one from error_type) is	enough.  Don't make our own in addition.
	(define_symbol): Don't treat an N_FUN 'R' as a prototype.
	* gdbtypes.h: Doc fixes.