* v850-tdep.c (v850_generic_reg_names, v850e_reg_names,

	* v850-tdep.c (v850_generic_reg_names, v850e_reg_names,
	v850_register_names, v850_processor_type_table): Declare tables
	and structures for handling differences in register names for
	v850 and v850e.
	(struct reg_list): Define new structure for creating tables
	of register bit masks in v850e instrutions.
	(handle_prepare, handle_pushm): New helpers for v850_scan_prologue.
	(v850_scan_prologue): Recognize v850e instructions: callt, prepare,
	and pushm.
	(v850_target_architecture_hook): New function to set register
	names based on current machine.
	(_initialize_v850_tdep): Set up target_architecture_hook.
	* config/v850/tm-v850.h (v850_register_names): Declare.
	(REGISTER_NAME): Define to refer to v850_register_names.
	(SR0_REGNUM, CTBP_REGNUM): Define.
	(PS_REGNUM): Redefine in terms of SR0_REGNUM.