cmake: fix for qt
cmake: fix for qt

Change-Id: Ie3dbcea491548d0fe42e6cc2f74d5575eae07657
Reviewed-on: http://gerrit.aldebaran.lan:8080/3512
Reviewed-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>
Tested-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>

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