Undefines local defines and moves global to __define (#16028)

* first set of defines

* some more

* .

* final defines

* del local define

code/modules/scripting/Interpreter/Interpreter.dm

@@ -307,3 +307,6 @@ S     - The scope the variable resides in. If it is null, a scope with the varia
 	//TODO: check for invalid name
 	S.variables["[name]"] = value
 
+#undef RETURNING
+#undef BREAKING
+#undef CONTINUING