[DEBUG] (featureController) add mutex to protect the dictionary
[DEBUG] (featureController) add mutex to protect the dictionary

Change-Id: I3872f4e4bcfc71e236aedce36a6566985d173074

pwkalana9/libARController,offbye/libARController,offbye/libARController,offbye/libARController,niavok/libARController,pwkalana9/libARController,Parrot-Developers/libARController,pwkalana9/libARController,Parrot-Developers/libARController,Parrot-Developers/libARController,niavok/libARController,offbye/libARController,Parrot-Developers/libARController,niavok/libARController,niavok/libARController,pwkalana9/libARController