Compilation for the 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

The test fails on jenkins because the Android SDK and NDK are not installed. The tools from both SDKs must be in the PATH. (Error: http://gresil.org/jenkins/job/CI%20Alexis/lastCompletedBuild/testReport/test/platform/test_platform_android/)

To do next:
* Solve the --no-stacktrace problem.
* Implement mnit for Android