Allow to get stack trace when rethrowing NSErrors to JavaScript

[jasssonpet]

var fileManager = NSFileManager.defaultManager();
fileManager.contentsOfDirectoryAtPathError('/not-existing-path');

global.__onUncaughtError = function (error) {
    console.log(error.stack); // undefined
};

Providing the native stack trace would also be helpful, if possible.

Maybe we could throw a JS Error with nativeException property, like the Android does.

This is requested by our analytics services.

[fealebenpae]

Implemented in #458