Fix overriding stairs nodes

mod.conf

@@ -3,4 +3,4 @@ description = Enhances default glass to make it colorable.
 version = 1.1
 author = Jordan Irwin (AntumDeluge)
 depends = unifieddyes
-optional_depends = sounds, default
+optional_depends = sounds, default, stairs

nodes.lua

@@ -29,18 +29,38 @@ local glass_nodes = {
 		description = S("Obsidian Glass"),
 		tiles = {"glass_obsidian.png", "glass_obsidian_detail.png"},
 	},
+	-- stairs
+	{
+		name = "stairs:stair_glass",
+	},
+	{
+		name = "stairs:stair_inner_glass",
+	},
+	{
+		name = "stairs:stair_outer_glass",
+	},
+	{
+		name = "stairs:slab_glass",
+	},
+	{
+		name = "stairs:stair_obsidian_glass",
+	},
+	{
+		name = "stairs:stair_inner_obsidian_glass",
+	},
+	{
+		name = "stairs:stair_outer_obsidian_glass",
+	},
+	{
+		name = "stairs:slab_obsidian_glass",
+	},
+	-- ???
 	{
 		name = "default:glass_cube",
 	},
 	{
 		name = "default:glass_doublepanel",
 	},
-	{
-		name = "default:glass_halfstair",
-	},
-	{
-		name = "default:glass_innerstair",
-	},
 	{
 		name = "default:glass_micropanel",
 	},
@@ -50,27 +70,15 @@ local glass_nodes = {
 	{
 		name = "default:glass_nanoslab",
 	},
-	{
-		name = "default:glass_outerstair",
-	},
 	{
 		name = "default:glass_panel",
 	},
-	{
-		name = "default:glass_thinstair",
-	},
 	{
 		name = "default:obsidian_glass_cube",
 	},
 	{
 		name = "default:obsidian_glass_doublepanel",
 	},
-	{
-		name = "default:obsidian_glass_halfstair",
-	},
-	{
-		name = "default:obsidian_glass_innerstair",
-	},
 	{
 		name = "default:obsidian_glass_micropanel",
 	},
@@ -80,15 +88,9 @@ local glass_nodes = {
 	{
 		name = "default:obsidian_glass_nanoslab",
 	},
-	{
-		name = "default:obsidian_glass_outerstair",
-	},
 	{
 		name = "default:obsidian_glass_panel",
 	},
-	{
-		name = "default:obsidian_glass_thinstair",
-	},
 	-- xpanes
 	--[[ FIXME:
 				- overriding paramtype2 = "facedir" causes ugly connections