Mapping tool: adds a "structure" spawner that can be used to create "sets" of objects in a turf at runtime rather than having to stack objects in the map editor. Included are two presets for window and rwindow with a "wiring friendly" icon.

code/game/objects/effects/spawners/structure.dm

@@ -0,0 +1,33 @@
+/*
+Because mapping is already tedious enough this spawner let you spawn generic
+"sets" of objects rather than having to make the same object stack again and
+again.
+*/
+
+/obj/effect/spawner/structure
+	name = "map structure spawner"
+	var/list/spawn_list
+
+/obj/effect/spawner/structure/New()
+	if(spawn_list && spawn_list.len)
+		for(var/i = 1, i <= spawn_list.len, i++)
+			var/to_spawn = spawn_list[i]
+			new to_spawn(get_turf(src))
+	qdel(src)
+
+/obj/effect/spawner/structure/window
+	icon = 'icons/obj/structures.dmi'
+	icon_state = "window_spawner"
+	name = "window spawner"
+	spawn_list = 	list(
+						/obj/structure/grille,
+						/obj/structure/window/fulltile
+						)
+
+/obj/effect/spawner/structure/window/reinforced
+	name = "reenforced window spawner"
+	icon_state = "rwindow_spawner"
+	spawn_list = 	list(
+						/obj/structure/grille,
+						/obj/structure/window/reinforced/fulltile
+						)