* include/grub/acpi.h (GRUB_ASCII_OPCODE): Add

	* include/grub/acpi.h (GRUB_ASCII_OPCODE): Add
	GRUB_ACPI_OPCODE_STRING_CONST, GRUB_ACPI_OPCODE_BUFFER,
	GRUB_ACPI_OPCODE_CREATE_WORD_FIELD
	and GRUB_ACPI_OPCODE_CREATE_BYTE_FIELD.
	* grub-core/commands/acpihalt.c [GRUB_DSDT_TEST]: Replace include of
	i18n with gettext no-op.
	(skip_data_ref_object): Support GRUB_ACPI_OPCODE_BUFFER and
	GRUB_ACPI_OPCODE_STRING_CONST.
	(get_sleep_type): Support GRUB_ACPI_OPCODE_CREATE_WORD_FIELD and
	GRUB_ACPI_OPCODE_CREATE_BYTE_FIELD. Add handling of unknown opcodes.