+ bugfix in btAlignedObjectArray, not calling destructors on resize to smaller array.

Thanks Benoit for pointing this out, and bugfix: http://code.google.com/p/bullet/issues/detail?id=218

+ Added point to point, hinge, slider and generic 6dof constraints to Maya Dynamica plugin
Thanks to Herbert Law for the constribution: http://code.google.com/p/bullet/issues/detail?id=221

src/BulletDynamics/ConstraintSolver/btSliderConstraint.h

@@ -126,6 +126,7 @@ protected:
 public:
 	// constructors
     btSliderConstraint(btRigidBody& rbA, btRigidBody& rbB, const btTransform& frameInA, const btTransform& frameInB ,bool useLinearReferenceFrameA);
+    btSliderConstraint(btRigidBody& rbB, const btTransform& frameInB, bool useLinearReferenceFrameB);
     btSliderConstraint();
 	// overrides
     virtual void	buildJacobian();