Make BenchmarkDemo a console application, without OpenGL/Glut dependency.

Fix potential division by zero when enabling convex distance utility.
Thanks to linzner http://code.google.com/p/bullet/issues/detail?id=264

Demos/ContinuousConvexCollision/ContinuousConvexCollisionDemo.cpp

@@ -63,7 +63,7 @@ btTransform	toTrans[maxNumObjects];
 int screenWidth = 640;
 int screenHeight = 480;
 
-#ifndef _WINDOWS
+
 int main(int argc,char** argv)
 {
 	btContinuousConvexCollisionDemo* ccdDemo = new btContinuousConvexCollisionDemo();
@@ -74,16 +74,6 @@ int main(int argc,char** argv)
 	
 	return glutmain(argc, argv,screenWidth,screenHeight,"Continuous Convex Collision Demo",ccdDemo);
 }
-#else
-DemoApplication* createDemo()
-{
-	btContinuousConvexCollisionDemo* ccdDemo = new btContinuousConvexCollisionDemo();
-
-	ccdDemo->setCameraDistance(40.f);
-	return ccdDemo;
-
-}
-#endif //_WINDOWS
 
 
 void	btContinuousConvexCollisionDemo::initPhysics()