Added specialKeyboardUp handler to GLUI (why was it missing?)

Some cleanup for ForkLiftDemo
Enable textures for ConcavePhysicsDemo, 
Added scaling to BasicDemo to show small objects (20 centimeter)
Removed demos from 'AllBulletDemos': less (clutter) = more

Demos/ForkLiftDemo/ForkLiftDemo.cpp

@@ -73,7 +73,7 @@ const int maxOverlap = 65535;
 float	gEngineForce = 0.f;
 
 float	defaultBreakingForce = 10.f;
-float	gBreakingForce = 10.f;
+float	gBreakingForce = 100.f;
 
 float	maxEngineForce = 1000.f;//this should be engine/velocity dependent
 float	maxBreakingForce = 100.f;
@@ -116,6 +116,9 @@ m_vertices(0)
 	m_vehicle = 0;
 	m_cameraPosition = btVector3(30,30,30);
 	m_useDefaultCamera = false;
+	setTexturing(true);
+	setShadows(true);
+
 }
 
 
@@ -131,9 +134,19 @@ void ForkLiftDemo::termPhysics()
 		btRigidBody* body = btRigidBody::upcast(obj);
 		if (body && body->getMotionState())
 		{
+
+			while (body->getNumConstraintRefs())
+			{
+				btTypedConstraint* constraint = body->getConstraintRef(0);
+				m_dynamicsWorld->removeConstraint(constraint);
+				delete constraint;
+			}
 			delete body->getMotionState();
+			m_dynamicsWorld->removeRigidBody(body);
+		} else
+		{
+			m_dynamicsWorld->removeCollisionObject( obj );
 		}
-		m_dynamicsWorld->removeCollisionObject( obj );
 		delete obj;
 	}
 
@@ -348,7 +361,6 @@ const float TRIANGLE_SIZE=20.f;
 
 	{
 		btCollisionShape* suppShape = new btBoxShape(btVector3(0.5f,0.1f,0.5f));
-		m_collisionShapes.push_back(chassisShape);
 		btTransform suppLocalTrans;
 		suppLocalTrans.setIdentity();
 		//localTrans effectively shifts the center of mass with respect to the chassis
@@ -666,6 +678,9 @@ void ForkLiftDemo::displayCallback(void)
 void ForkLiftDemo::clientResetScene()
 {
 	gVehicleSteering = 0.f;
+	gBreakingForce = defaultBreakingForce;
+	gEngineForce = 0.f;
+
 	m_carChassis->setCenterOfMassTransform(btTransform::getIdentity());
 	m_carChassis->setLinearVelocity(btVector3(0,0,0));
 	m_carChassis->setAngularVelocity(btVector3(0,0,0));