Prereview code, but with the spaces converted to tabs.

* Cleaned up all of the code, checked to make sure that there were no erraneous debug logging.
* To enable debugging, turn it on in the api by changing the following line in item_frames_api.lua:
mcl_itemframes.DEBUG = false -- set to true to see debug output.
* Made the standard Item Frame and the new Glow Frame use the frames API. 
Added in backwards compatibility mode.
* Made frames pop out items into the world on the old frames' entities when they are a hidden / broken entity. (Part of the backwards compatibility.)

* Tested locally.

* *Converted the spaces to tabs!*

Should be fully functional and ready for review.

mods/ITEMS/mcl_itemframes/init.lua

@@ -10,53 +10,53 @@ dofile(modpath .. "/item_frames_API.lua")
 mcl_itemframes.create_base_definitions()
 
 -- necessary to maintain compatibility amongst older versions.
-mcl_itemframes.backwards_compatibility ()
+mcl_itemframes.backwards_compatibility()
 
 -- test for the create custom frame
 mcl_itemframes.create_custom_frame("false", "item_frame", false,
-        "mcl_itemframes_item_frame.png", mcl_colors.WHITE, "Item Frame",
-        "Can hold an item.")
+		"mcl_itemframes_item_frame.png", mcl_colors.WHITE, "Item Frame",
+		"Can hold an item.")
 mcl_itemframes.create_custom_frame("false", "glow_item_frame", true,
-        "mcl_itemframes_glow_item_frame.png", mcl_colors.WHITE, "Glowing Item Frame",
-        "Can hold an item and glows.")
+		"mcl_itemframes_glow_item_frame.png", mcl_colors.WHITE, "Glowing Item Frame",
+		"Can hold an item and glows.")
 
 -- Register the base frame's recipes.
 -- was going to make it a specialized function, but minetest refuses to play nice.
 minetest.register_craft({
-    output = "mcl_itemframes:item_frame",
-    recipe = {
-        { "mcl_core:stick", "mcl_core:stick", "mcl_core:stick" },
-        { "mcl_core:stick", "mcl_mobitems:leather", "mcl_core:stick" },
-        { "mcl_core:stick", "mcl_core:stick", "mcl_core:stick" },
-    }
+	output = "mcl_itemframes:item_frame",
+	recipe = {
+		{ "mcl_core:stick", "mcl_core:stick", "mcl_core:stick" },
+		{ "mcl_core:stick", "mcl_mobitems:leather", "mcl_core:stick" },
+		{ "mcl_core:stick", "mcl_core:stick", "mcl_core:stick" },
+	}
 })
 
 minetest.register_craft({
-    type = "shapeless",
-    output = 'mcl_itemframes:glow_item_frame',
-    recipe = { 'mcl_mobitems:glow_ink_sac', 'mcl_itemframes:item_frame' },
+	type = "shapeless",
+	output = 'mcl_itemframes:glow_item_frame',
+	recipe = { 'mcl_mobitems:glow_ink_sac', 'mcl_itemframes:item_frame' },
 })
 
 --[[ green frames just for testing
 mcl_itemframes.create_custom_frame("false", "my_regular_frame", false,
-        "mcl_itemframes_item_frame.png", mcl_colors.DARK_GREEN, "A Green frame",
-        "My Green Frame")
+		"mcl_itemframes_item_frame.png", mcl_colors.DARK_GREEN, "A Green frame",
+		"My Green Frame")
 mcl_itemframes.create_custom_frame("false", "my_glowing_frame", true,
-        "mcl_itemframes_glow_item_frame.png", mcl_colors.DARK_GREEN, "A Green glowing frame",
-        "My Green glowing Frame")
+		"mcl_itemframes_glow_item_frame.png", mcl_colors.DARK_GREEN, "A Green glowing frame",
+		"My Green glowing Frame")
 
 minetest.register_craft({
-    output = "mcl_itemframes:my_regular_frame",
-    recipe = {
-        { "", "mcl_core:stick", "" },
-        { "mcl_core:stick", "", "mcl_core:stick" },
-        { "", "mcl_core:stick", "" },
-    }
+	output = "mcl_itemframes:my_regular_frame",
+	recipe = {
+		{ "", "mcl_core:stick", "" },
+		{ "mcl_core:stick", "", "mcl_core:stick" },
+		{ "", "mcl_core:stick", "" },
+	}
 })
 
 minetest.register_craft({
-    type = "shapeless",
-    output = "mcl_itemframes:my_glowing_frame",
-    recipe = { "mcl_mobitems:glow_ink_sac", "mcl_itemframes:my_regular_frame" },
+	type = "shapeless",
+	output = "mcl_itemframes:my_glowing_frame",
+	recipe = { "mcl_mobitems:glow_ink_sac", "mcl_itemframes:my_regular_frame" },
 })
 --]]