* gdbarch.sh (push_dummy_code): Add REGCACHE argument.

	* gdbarch.sh (push_dummy_code): Add REGCACHE argument.
	* gdbarch.c, gdbarch.h: Regenerate.
	* infcall.c (generic_push_dummy_code): Add REGCACHE argument.
	(push_dummy_code): Likewise.  Pass it to callee.
	(call_function_by_hand): Pass current regcache to push_dummy_code.

	* hppa-hpux-tdep.c (hppa_hpux_push_dummy_code): Add REGCACHE
	argument.  Use it instead of current_regcache.

	* cris-tdep.c (cris_push_dummy_code): Add REGCACHE argument.
	* sparc-tdep.c (sparc32_push_dummy_code): Likewise.