remoteobject: better log on error
remoteobject: better log on error

Change-Id: I161f8c503b696962622bb989435657a1a872f024

vbarbaresi/libqi,aldebaran/libqi-java,aldebaran/libqi,aldebaran/libqi,aldebaran/libqi-java,aldebaran/libqi,bsautron/libqi,aldebaran/libqi-java