Passing arguments to simulator apps not working

[premun]

Extra app arguments that are sent to app are not readable in the app. This is probably an mlaunch regression but logging it down to not forget about it.

Passing environmental variables work still.

We need to investigate:

1. If this worked before - test with older Xcode, iOS
2. How come it still works in VSMac - we should run an app from VSMac and check whether parameters are passed as arguments really or through some hack via env vars too and parsed in the wrapper