* gdbtypes.h (struct builtin_type): New members nodebug_text_symbol,

	* gdbtypes.h (struct builtin_type): New members nodebug_text_symbol,
	nodebug_data_symbol, nodebug_unknown_symbol, and nodebug_tls_symbol.
	* gdbtypes.c (gdbtypes_post_init): Initialize nodebug_ default types.

	* parse.c (msym_text_symbol_type, msym_data_symbol_type): Remove.
	(msym_unknown_symbol_type, msym_tls_symbol_type): Remove.
	(write_exp_msymbol): Use builtin nodebug_ types instead of them.
	(build_parse): Remove.
	(_initialize_parse): Do not call build_parse.  Do not register
	msym_ types for gdbarch-swapping.

	* dwarf2read.c (new_symbol): Use default nodebug_data_symbol type
	instead of creating private type.

	* xcoffread.c (func_symbol_type, var_symbol_type): Remove.
	(_initialize_xcoffread): Do not initialized them.
	(process_xcoff_symbol): Use builtin nodebug_ types instead of them.

	* mdebugread.c (nodebug_func_symbol_type): Remove.
	(nodebug_var_symbol_type): Remove.
	(_initialize_mdebugread): Do not initialize them.
	(parse_symbol): Use builtin nodebug_ type instead of them.
	(parse_procedure): Likewise.