[all] Add releasing scripts.

Signed-off-by: Stéphane Galland <galland@arakhne.org>
[all] Change the version numbers.

Signed-off-by: Stéphane Galland <galland@arakhne.org>
Merge pull request #79 from janus-project/prepare-release-2.0.1.0

Prepare release 2.0.1.0