fix compilation with qt for perfomance tests
fix compilation with qt for perfomance tests

Change-Id: Idb220d5cc9fd7ccfd07d6465207d5c0533f0a7ad
Reviewed-on: http://gerrit.aldebaran.lan:8080/6752
Tested-by: goreal <248f255d27e09e8ce7c37f5254a06dc6b2420b71@aldebaran-robotics.com>
Reviewed-by: ncornu <13ba26b8f12d26c819f48749c65f2f7f5c1d13db@aldebaran-robotics.com>
Tested-by: ncornu <13ba26b8f12d26c819f48749c65f2f7f5c1d13db@aldebaran-robotics.com>

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