* expression.h (struct expression): New member GDBARCH.

	* parse.c (parse_exp_in_context): Initialize it.
	* parser-def.h (parse_gdbarch, parse_language): New macros.

	* ada-exp.y (parse_type): New macro.
	Replace builtin_type_ macros by using parse_type.
	Replace current_language by parse_language.
	* ada-lex.l (processInt): Replace current_gdbarch by parse_gdbarch.
	Replace builtin_type_ macros.

	* c-exp.y (parse_type): New macro.
	Replace builtin_type_ macros by using parse_type.
	(parse_number): Replace current_gdbarch by parse_gdbarch.
	(yylex): Replace current_language by parse_language.

	* f-exp.y (parse_type, parse_f_type): New macros.
	Replace builtin_type_ macros by using parse_{f_,}type.
	(parse_number): Replace current_gdbarch by parse_gdbarch.
	(yylex): Replace current_language by parse_language.

	* jv-exp.y (parse_type): New macro.
	(parse_number): Replace builtin_type_ macros by using parse_type.

	* m2-exp.y (parse_type, parse_m2_type): New macros.
	Replace builtin_type_ macros by using parse_{m2_,}type.

	* objc-exp.y (parse_type): New macro.
	Replace builtin_type_ macros by using parse_type.
	(parse_number): Replace current_gdbarch by parse_gdbarch.
	(yylex): Replace current_language by parse_language.

	* p-exp.y (parse_type): New macro.
	Replace builtin_type_ macros by using parse_type.
	(parse_number): Replace current_gdbarch by parse_gdbarch.
	(yylex): Replace current_language by parse_language.