lua.wetgenes.path.setup
setup for windows or linux style paths, to force one or the other use
wpath.setup("win")
wpath.setup("nix")
We automatically call this at startup and make a best guess, you can revert to this best guess with
wpath.setup()
This is a global setting, so be careful with changes. Mostly its probably best to stick with the best guess unless we are mistakenly guessing windows.