[Ada] Implement aspect No_Controlled_Parts

[Ada] Implement aspect No_Controlled_Parts

gcc/ada/

	* aspects.ads: Add entries to register
	Aspect_No_Controlled_Parts.
	* freeze.adb (Check_No_Controlled_Parts_Violations): Added to
	check requirements of aspect No_Controlled_Parts after a type
	has been frozen.
	(Freeze_Entity): Add call to
	Check_No_Controlled_Parts_Violations.
	(Find_Aspect_No_Controlled_Parts): Created to obtain the aspect
	specification for No_Controlled_Parts on a given type when
	present.
	(Find_Aspect_No_Controlled_Parts_Value): Protect against invalid
	value.
	(Has_Aspect_No_Controlled_Parts): Created as a prediate function
	to check if No_Controlled_Parts has been specified on a type for
	Get_Anacestor_Types_With_Specification.
	(Get_Aspect_No_Controlled_Parts_Value): Created to obtain the
	value of the aspect No_Controlled_Parts when specified on a
	given type.
	(Get_Generic_Formal_Types_In_Hierarchy): Created to collect
	formal types in a given type's hierarchy.
	(Get_Types_With_Aspect_In_Hierarchy): Created to collect types
	in a given type's hierarchy with No_Controlled_Parts specified.
	* sem_ch13.adb (Analyze_One_Aspect): Add processing for
	No_Controlled_Parts, and fix error in check for allowed pragmas
	for formal types.
	(Check_Expr_Is_OK_Static_Expression): Created to enforce
	checking of static expressions in the same vein as
	Analyze_Pragma.Check_Expr_OK_Static_Expression.
	* sem_util.adb (Collect_Types_In_Hierarchy): Created to collect
	types in a given type's hierarchy that match a given predicate
	function.
	* sem_util.ads: Fix typo.
	* snames.ads-tmpl: Add entry for No_Controlled_Parts.