Add access to overlapping pairs b3OpenCLArray.

src/Bullet3OpenCL/BroadphaseCollision/b3GpuSapBroadphase.cpp

@@ -1308,6 +1308,10 @@ cl_mem	b3GpuSapBroadphase::getOverlappingPairBuffer()
 	return m_overlappingPairs.getBufferCL();
 }
 
+b3OpenCLArray<b3Int4>& b3GpuSapBroadphase::getOverlappingPairsGPU()
+{
+	return m_overlappingPairs;
+}
 b3OpenCLArray<int>& b3GpuSapBroadphase::getSmallAabbIndicesGPU()
 {
 	return m_smallAabbsMappingGPU;