anyobject: pretty error message
anyobject: pretty error message

Change-Id: I08cdb41b72315ed3304a33f67f4a35df6c6482bf
Reviewed-on: http://gerrit.aldebaran.lan/26190
Reviewed-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>
Tested-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>

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