world._show_block: Commented out currently unused code
Should speed up world loading/generating
Added support for MC 1.5 Texture Pack format
Should have nearly identical performance to the single file texture.png format
Still uses old texture.png if a Texture Pack isn't present, unsure if we should
phase out the single file entirely
Merge branch 'texturepack' of git://github.com/Nebual/Minecraft

Conflicts:
	blocks.py