re-enable the GenericJointDemo for CMake

Demos/GenericJointDemo/main.cpp

@@ -0,0 +1,28 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2010 Erwin Coumans  http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "GenericJointDemo.h"
+
+int main(int argc,char* argv[])
+{
+	GenericJointDemo demoApp;
+//	demoApp.configDebugDrawer(&debugDrawer);
+
+	demoApp.initPhysics();
+	demoApp.setCameraDistance(btScalar(10.));
+
+	return glutmain(argc, argv,640,480,"Joint 6DOF - Sequencial Impulse Solver",&demoApp);
+
+}