perf*qt*: Disable if not WITH_QT.
perf*qt*: Disable if not WITH_QT.

	* bin/perfs/CMakeLists.txt: There.

Change-Id: I41da09e08bf71e2c8256b332c4f272cbac09a435

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