* regcache.c (regcache_invalidate): New function.

	* regcache.c (regcache_invalidate): New function.
	(register_cached): Remove.
	(set_register_cached): Remove.
	(deprecated_registers_fetched): Remove.
	(registers_changed): Use regcache_invalidate instead
	of set_register_cached.
	(regcache_raw_read): Update comment.

	* regcache.h (regcache_invalidate): Add prototype.
	(register_cached): Remove.
	(set_register_cached): Remove.
	(deprecated_registers_fetched): Remove.

	* findvar.c (value_of_register): Do not call register_cached.
	* frame.c (frame_register): Likewise.
	* tui/tui-regs.c (tui_get_register): Likewise.

	* remote.c (fetch_register_using_p): Do not call set_register_cached.
	(process_g_packet): Likewise.
	(remote_fetch_registers): Likewise.
	* remote-sim.c (gdbsim_fetch_register): Likewise.
	* mt-tdep.c (mt_select_coprocessor): Replace set_register_cached call
	by regcache_invalidate.
	(mt_pseudo_register_write): Likewise.
	* sh-tdep.c (sh_pseudo_register_write): Likewise.

	* corelow.c (get_core_registers): Replace deprecated_registers_fetched
	call by loop over regcache_raw_supply (..., NULL).