introduce call_function_by_hand_dummy

introduce call_function_by_hand_dummy

This provides a variant of call_function_by_hand that allows the dummy
frame destructor to be set.  This is used by the compiler code to
manage some resources when calling the gdb-generated inferior
function.

gdb/ChangeLog
2014-12-12  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* infcall.h (call_function_by_hand_dummy): Declare.
	* infcall.c (call_function_by_hand): Use
	call_function_by_hand_dummy.
	(call_function_by_hand_dummy): Rename from call_function_by_hand.
	Add arguments.  Register a destructor.