* gdbarch.sh (ADDRESS_CLASS_TYPE_FLAGS_TO_NAME)

	* gdbarch.sh (ADDRESS_CLASS_TYPE_FLAGS_TO_NAME)
	(ADDRESS_CLASS_NAME_TO_TYPE_FLAGS): Use ``const char *'' instead of
	``char *'' for return and parameter types.
	* gdbarch.h, gdbarch.c: Regenerate.
	* gdbtypes.h, gdbtypes.c (address_space_int_to_name): Change
	return type from ``char *'' to ``const char *''.
	* c-typeprint.c (c_type_print_modifier): Make ``address_space_id''
	const.