Basic serial variable creation and update This is a really basic implementation, this should help to develop the full VariableController pipeline. Added debug header to allow a custom behavior between debug and production, using SCIQLOP_ERROR macro will blow on debug but will have a different behavior in production code. This will allow to highlight any unexpected behavior without flooding stdout. Signed-off-by: Alexis Jeandet <alexis.jeandet@member.fsf.org>

Added SynchronizationGroup2 tests and documentation Signed-off-by: Alexis Jeandet <alexis.jeandet@member.fsf.org>

First init from SciQLop Core module The goal is to write a new variable controller Signed-off-by: Alexis Jeandet <alexis.jeandet@member.fsf.org>