I added some more backpatching and some more files for testing

tests/sprint3/test/sp3_arr_reserve.alpha

@@ -0,0 +1,11 @@
+
+type main: string -> integer
+function entry: main
+type t: 3 -> integer
+
+
+entry (arg) := {
+ 	[ t:a]
+        a := reserve a(1, 3, 4);
+	return 0;
+}