Future: protect the shared state
Future: protect the shared state

The shared state is internal and should not be touched by anyone. Sadly,
ExecutionContext uses it

Change-Id: I60abfe80d8b793fc90c92a820659ee74375fca75
Reviewed-on: http://gerrit.aldebaran.lan/86219
Reviewed-by: jlamotte <70353e7b0c7d18b7fc75605daf0ccba69fcd3222@aldebaran.com>
Tested-by: vpaleologue <cb19838a79eb484e12a6960acfbf7c16dfdb80d9@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi