Figure out how to resolve Lua module loading

[ensisoft]

Let's say we have two Lua modules by the same name but by a different author, so essentially the same module. One of these might be under the game and another one could be imported from a zip archive. This would produce a structure something like

project/lua/foobar.lua project/package/lua/foobar.lua

The current Lua module loader has not understanding of this and will fail with this structure.