ada: Storage_Error in indirect call to function returning limited type

ada: Storage_Error in indirect call to function returning limited type

At runtime the code generated by the compiler reports the
exception Storage_Error in an indirect call through an
access-to-subprogram variable that references a function
returning a limited tagged type object.

gcc/ada/

	* sem_ch6.adb (Might_Need_BIP_Task_Actuals): Add support
	for access-to-subprogram parameter types.
	* exp_ch6.adb (Add_Task_Actuals_To_Build_In_Place_Call):
	Add dummy BIP parameters to access-to-subprogram types
	that may reference a function that has BIP parameters.