fix issue with datastream and qi::file
fix issue with datastream and qi::file

Change-Id: I38d26fea687687627d03d464e41fdf906d31b3f2
Reviewed-on: http://gerrit.aldebaran.lan:8080/1150
Reviewed-by: hcuche <2a0975cc082cedff4d4350e3f6ec187146151bc6@aldebaran-robotics.com>
Tested-by: hcuche <2a0975cc082cedff4d4350e3f6ec187146151bc6@aldebaran-robotics.com>

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