FutureSync: support _connect and < like Future
FutureSync: support _connect and < like Future

Change-Id: Ic919d398e3d08317b983f7cdcf77b6b870eebed4
Reviewed-on: http://gerrit.aldebaran.lan:8080/17217
Reviewed-by: mnottale <e3ccf1b6558404e921a21fa09cebb1153b50ec36@aldebaran-robotics.com>
Tested-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>

bsautron/libqi,aldebaran/libqi,aldebaran/libqi,vbarbaresi/libqi,aldebaran/libqi