added mem_compact (hl 1.12)

std/hl/Api.hx

@@ -43,5 +43,6 @@ extern class Api {
 	@:hlNative("std", "ptr_compare") static function comparePointer(a:Dynamic, b:Dynamic):Int;
 	#if (hl_ver >= version("1.12.0"))
 	@:hlNative("std", "is_prim_loaded") static function isPrimLoaded(f:haxe.Constraints.Function):Bool;
+	@:hlNative("?std", "mem_compact") static function compact<T>( v : T, exclude : hl.NativeArray<Dynamic>, flags : Int ) : T;
 	#end
 }