Merge: Improved parallelization phase

The "threaded" annotation now supports functions with parameters !

Still need to check for eventual self calls in the body of the annotated function

Pull-Request: #1255
Reviewed-by: Alexis Laferrière <alexis.laf@xymus.net>
Reviewed-by: Jean Privat <jean@pryen.org>
Reviewed-by: Alexandre Terrasa <alexandre@moz-code.org>
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>