* h8300-tdep.c: Add H8SX registers. Drop E_NUM_REGS entirely,

	* h8300-tdep.c: Add H8SX registers. Drop E_NUM_REGS entirely,
	substitute by NUM_REGS throughout.
	(h8300_register_name): Only care for H8/300 and H8/300H registers.
	(h8300s_register_name): New function for H8S registers.
	(h8300sx_register_name): Ditto for H8SX registers.
	(h8300_print_register): Revise register printing, avoid depending
	on 32 bit long.
	(h8300_register_byte); Only care for H8/300 registers.
	(h8300h_register_byte): New function for any other architecture.
	(h8300_register_raw_size): Remove.
	(h8300_register_virtual_type): Revise to return actually useful
	type.
	(h8300_extract_struct_value_address): Only care for H8/300 registers.
	(h8300h_extract_struct_value_address): New function for any other
	architecture.
	(h8300_gdbarch_init): Add h8300sxn.  Call set_gdbarch_num_regs,
	set_gdbarch_register_name, set_gdbarch_register_byte,
	set_gdbarch_ptr_bit and set_gdbarch_addr_bit architecture dependent.
	Remove calls to set_gdbarch_deprecated_register_size,
	set_gdbarch_deprecated_register_bytes, set_gdbarch_register_raw_size,
	set_gdbarch_deprecated_max_register_raw_size,
	set_gdbarch_register_virtual_size and
	set_gdbarch_deprecated_max_register_virtual_size entirely.
	Call set_gdbarch_long_long_bit, set_gdbarch_double_bit and
	set_gdbarch_long_double_bit.