tests: move the check of exec.skip to detect compilation error

Signed-off-by: Jean Privat <jean@pryen.org>
tests/android: Reset mnit_simple to its original state

Signed-off-by: Frédéric Vachon <fredvac@gmail.com>
tests/android: Create/Move the projects into tests directory

Signed-off-by: Frédéric Vachon <fredvac@gmail.com>
tests/android: Add the tests source files

Signed-off-by: Frédéric Vachon <fredvac@gmail.com>