* gdbtypes.h (struct builtin_type): Remove builtin_core_addr,

	* gdbtypes.h (struct builtin_type): Remove builtin_core_addr,
	nodebug_text_symbol, nodebug_data_symbol, nodebug_unknown_symbol,
	and nodebug_tls_symbol members.
	(struct objfile_type): New data structure.
	(objfile_type): Add prototype.
	* gdbtypes.c (gdbtypes_post_init): Remove initialization code
	for types no longer in struct builtin_type.
	(objfile_type_data): New static variable.
	(_initialize_gdbtypes): Initialize it.
	(objfile_type): New function.

	* gdbtypes.h (builtin_type_error): Remove.
	* gdbtypes.c (build_complex): Do not use builtin_type_error.
	* symtab.c (builtin_type_error): Remove.
	(_initialize_symtab): Remove initialization.

	* stabsread.c (dbx_lookup_type, define_symbol, error_type,
	rs6000_builtin_type, read_range_type): Use per-objfile types
	instead of global or per-architecture builtin types.
	* coffread.c (decode_type): Likewise.
	* dwarf2read.c (read_array_type, read_tag_string_type,
	new_symbol, die_type): Likewise.
	* mdebugread.c (parse_symbol, basic_type, upgrade_type,
	parse_procedure, psymtab_to_symtab_1): Likewise.
	* xcoffread.c (process_xcoff_symbol): Likewise.
	* parse.c (write_exp_msymbol): Likewise.

	* stabsread.c (rs6000_builtin_type_data): New static variable.
	(_initialize_stabsread): Initialize it.
	(rs6000_builtin_type): Add OBJFILE argument.  Allocate builtin
	types per-objfile instead of globally.

	* stabsread.c (dbx_lookup_type): Add OBJFILE argument.  Use it
	instead of current_objfile; pass it to rs6000_builtin_type.
	(dbx_alloc_type, read_type, read_range_type): Update calls.
	(cleanup_undefined_types_noname): Add OBJFILE argument and
	pass it to dbx_lookup_type.
	(cleanup_undefined_types): Add OBJFILE argument and pass it
	to cleanup_undefined_types_noname.
	* stabsread.h (cleanup_undefined_types): Add OBJFILE argument.
	* buildsym.c (end_symtab): Update call.