Compiled code improvements

Do you think this is working well enough to start using it in some of the IO modules

Probably not quite yet. First off I'm not sure the Web IDE scans modules for code to compile yet, but also it only handles:

function a() { "compiled"; ... }

and not:

var a = function () { "compiled"; ... }

which tends to be used a lot in modules (especially when doing A.prototype.b = function() {...}.

But when that's done then yes, it'd be really handy. Using it in some of the display drivers (especially the ones that have to define fillRect/setPixel) would provide some really big improvements.