add enet to windows build
fix enet on linking on windows
add error checking for texture loading
add texture list to GO so instaces don't share textures
add input box to lua api
Merge branch 'master' into lighting

Conflicts:
	GUI/TextBox.cpp
	Graphics/RenderManager.cpp
	Graphics/RenderManager.hpp
	Graphics/model.cpp
	Graphics/model.hpp
	data/scripts/main.lua
	premake4.lua