socket.connect: warn when port is 0
socket.connect: warn when port is 0

Change-Id: I80ad46bf6d6a7bdaafe2aa600e4b5edc123c71f7
Reviewed-on: http://gerrit.aldebaran.lan:8080/2844
Reviewed-by: proullon <ffff9135679d397f48dd743107119b1f6fc32d3d@aldebaran-robotics.com>
Reviewed-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>
Tested-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>

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