cleaned up, removed warning under MSVC2005 (Level 4)

Mostly related to alignment and unused variables

src/BulletDynamics/ConstraintSolver/btHingeConstraint.cpp

@@ -223,6 +223,7 @@ void	btHingeConstraint::solveConstraint(btScalar	timeStep)
 
 void	btHingeConstraint::updateRHS(btScalar	timeStep)
 {
+	(void)timeStep;
 
 }