Merge remote-tracking branch 'alexis/android-platform'

Add support to compile for Android with nitg. When the "android" module
is imported, nitg will generate an APK instead of a binary,

The option --no-stacktrace must be used for Android. This is why we
expect the test to fail.

The generate applications are not usable (as of yet) since they are only
console

To do next:

* Solve the --no-stacktrace problem.
* Implement mnit for Android