* gdbarch.sh (current_gdbarch): Remove global variable.

	* gdbarch.sh (current_gdbarch): Remove global variable.
	(find_arch_by_info): Remove, inline into ...
	(gdbarch_find_by_info): ... this.  Remove current_gdbarch swapping.
	(deprecated_current_gdbarch_select_hack): Rename to ...
	(deprecated_target_gdbarch_select_hack): ... this.  Do not set
	or access current_gdbarch.
	* gdbarch.c, gdbarch.h: Regenerate.

	* arch-utils.c (gdbarch_update_p): Update call.
	(set_gdbarch_from_file): Likewise.