util.paths: Optimize path joining with few arguments A casual search suggests that the majority of paths.join() calls involve only two arguments. This saves the creation of a table for up to 3 arguments. Looks like 3x faster for 3 arguments or less, 5% slower when it uses the array to concatenate.

-- Unknown platform stub
module:set_global();

-- TODO Do things that make sense if we don't know about the platform