add a qi::os::dlerror test
add a qi::os::dlerror test

Change-Id: I485cba6ec988292e4e12326dffc99b3e3e5098c0
Reviewed-on: http://gerrit.aldebaran.lan:8080/16993
Reviewed-by: sbarthelemy <9c154f64c36738f8e44d945c231ac417d15bd66e@aldebaran-robotics.com>
Reviewed-by: proullon <ffff9135679d397f48dd743107119b1f6fc32d3d@aldebaran-robotics.com>
Tested-by: proullon <ffff9135679d397f48dd743107119b1f6fc32d3d@aldebaran-robotics.com>

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