Wrote a whole new door routine, used it to add solid glass and glass-and-wood

doors, converted the others to use that new code, and all use nodeboxes now.
Folding doors are now called "closet" doors and will be converted via a handful
of aliases.  Tweaked crafting recipe for oak closet door to put the steel ingot
on the left.  Moves all doors' crafting recipes into crafts.lua.  This sweeps
away the old buggy zlpdoors-derived code.

crafts.lua

@@ -1367,3 +1367,158 @@ minetest.register_craft( {
 		"homedecor:fence_chainlink_gate_closed"
         },
 })
+
+-- doors
+
+-- fancy exterior
+
+minetest.register_craft( {
+        output = "homedecor:door_exterior_fancy_bottom_left 2",
+        recipe = {
+		{ "default:wood", "default:glass" },
+		{ "default:wood", "default:wood" },
+		{ "default:wood", "default:wood" },
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_exterior_fancy_bottom_left",
+        recipe = {
+		"homedecor:door_exterior_fancy_bottom_right"
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_exterior_fancy_bottom_right",
+        recipe = {
+		"homedecor:door_exterior_fancy_bottom_left"
+        },
+})
+
+
+-- wood and glass (grid style)
+
+minetest.register_craft( {
+        output = "homedecor:door_wood_glass_bottom_left 2",
+        recipe = {
+		{ "default:glass", "default:wood" },
+		{ "default:wood", "default:glass" },
+		{ "default:glass", "default:wood" },
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_wood_glass_bottom_left",
+        recipe = {
+		"homedecor:door_wood_glass_bottom_right"
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_wood_glass_bottom_right",
+        recipe = {
+		"homedecor:door_wood_glass_bottom_left"
+        },
+})
+
+-- Solid glass with metal handle
+
+minetest.register_craft( {
+        output = "homedecor:door_glass_bottom_left 2",
+        recipe = {
+		{ "default:glass", "default:glass" },
+		{ "default:glass", "default:steel_ingot" },
+		{ "default:glass", "default:glass" },
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_glass_bottom_left",
+        recipe = {
+		"homedecor:door_glass_bottom_right"
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_glass_bottom_right",
+        recipe = {
+		"homedecor:door_glass_bottom_left"
+        },
+})
+
+-- Closet doors
+
+-- oak
+
+minetest.register_craft( {
+        output = "homedecor:door_closet_oak_bottom_left 2",
+        recipe = {
+		{ "", "default:stick", "default:stick" },
+		{ "default:steel_ingot", "default:stick", "default:stick" },
+		{ "", "default:stick", "default:stick" },
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_closet_oak_bottom_left",
+        recipe = {
+		"homedecor:door_closet_oak_bottom_right"
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_closet_oak_bottom_right",
+        recipe = {
+		"homedecor:door_closet_oak_bottom_left"
+        },
+})
+
+-- mahogany
+
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_closet_mahogany_bottom_left 2",
+        recipe = {
+		"homedecor:door_closet_oak_bottom_left",
+		"homedecor:door_closet_oak_bottom_left",
+		"default:dirt",
+		"default:coal_lump",
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_closet_mahogany_bottom_left 2",
+        recipe = {
+		"homedecor:door_closet_oak_bottom_left",
+		"homedecor:door_closet_oak_bottom_left",
+		"unifieddyes:dark_orange"
+        },
+	replacements = { {'unifieddyes:dark_orange', 'vessels:glass_bottle'}, },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_closet_mahogany_bottom_left",
+        recipe = {
+		"homedecor:door_closet_mahogany_bottom_right"
+        },
+})
+
+minetest.register_craft( {
+	type = "shapeless",
+        output = "homedecor:door_closet_mahogany_bottom_right",
+        recipe = {
+		"homedecor:door_closet_mahogany_bottom_left"
+        },
+})
+