Add support for childshape index for btCompoundShape during ContactAddedCallback,

see example in Bullet/Demos/ConvexDecompositionDemo
Removed some warnings

src/BulletCollision/Gimpact/btGImpactBvh.h

@@ -231,6 +231,8 @@ class btPrimitiveManagerBase
 {
 public:
 
+	virtual ~btPrimitiveManagerBase() {}
+
 	//! determines if this manager consist on only triangles, which special case will be optimized
 	virtual bool is_trimesh() const = 0;
 	virtual int get_primitive_count() const = 0;

src/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp

@@ -102,6 +102,7 @@ public:
 		{
 			return m_parent->m_gim_shape->getChildShape(index);
 		}
+		virtual ~ChildShapeRetriever() {}
 	};
 
 	class TriangleShapeRetriever:public ChildShapeRetriever
@@ -113,6 +114,7 @@ public:
 			m_parent->m_gim_shape->getBulletTriangle(index,m_parent->m_trishape);
 			return &m_parent->m_trishape;
 		}
+		virtual ~TriangleShapeRetriever() {}
 	};
 
 	class TetraShapeRetriever:public ChildShapeRetriever
@@ -213,7 +215,8 @@ void btGImpactCollisionAlgorithm::addContactPoint(btCollisionObject * body0,
 				const btVector3 & normal,
 				btScalar distance)
 {
-	m_resultOut->setShapeIdentifiers(m_part0,m_triface0,m_part1,m_triface1);
+	m_resultOut->setShapeIdentifiersA(m_part0,m_triface0);
+	m_resultOut->setShapeIdentifiersB(m_part1,m_triface1);
 	checkManifold(body0,body1);
 	m_resultOut->addContactPoint(normal,point,distance);
 }
@@ -236,7 +239,8 @@ void btGImpactCollisionAlgorithm::shape_vs_shape_collision(
 		btCollisionAlgorithm* algor = newAlgorithm(body0,body1);
 		// post :	checkManifold is called
 
-		m_resultOut->setShapeIdentifiers(m_part0,m_triface0,m_part1,m_triface1);
+		m_resultOut->setShapeIdentifiersA(m_part0,m_triface0);
+		m_resultOut->setShapeIdentifiersB(m_part1,m_triface1);
 
 		algor->processCollision(body0,body1,*m_dispatchInfo,m_resultOut);
 
@@ -262,7 +266,8 @@ void btGImpactCollisionAlgorithm::convex_vs_convex_collision(
 	body1->internalSetTemporaryCollisionShape(shape1);
 
 
-	m_resultOut->setShapeIdentifiers(m_part0,m_triface0,m_part1,m_triface1);
+	m_resultOut->setShapeIdentifiersA(m_part0,m_triface0);
+	m_resultOut->setShapeIdentifiersB(m_part1,m_triface1);
 
 	checkConvexAlgorithm(body0,body1);
 	m_convex_algorithm->processCollision(body0,body1,*m_dispatchInfo,m_resultOut);

src/BulletCollision/Gimpact/btGImpactShape.h

@@ -302,6 +302,7 @@ public:
 	class CompoundPrimitiveManager:public btPrimitiveManagerBase
 	{
 	public:
+		virtual ~CompoundPrimitiveManager() {}
 		btGImpactCompoundShape * m_compoundShape;
 
 
@@ -582,6 +583,7 @@ public:
 
 		}
 
+		virtual ~TrimeshPrimitiveManager() {}
 
 		void lock()
 		{