Not enough memory available in the heap for unconfined models (#119)

* unsafe delete for unconfined benchmark

new: memory for array for maximum size.

* unsafe delete for unconfined benchmark

new: memory for array for maximum size.

* Allow $EPSILON for ST, in the same way like for BCs

Consisten with BC: The user is getting a choice to specify the tolreance in ST or taking the default or using the one from GLI.

* Revert "Allow $EPSILON for ST, in the same way like for BCs"

This reverts commit 4dcd7a6.

MSH/msh_lib.cpp

@@ -509,7 +509,7 @@ void MSHSelectFreeSurfaceNodes(MeshLib::CFEMesh* m_msh)
 	size_t NumberOfNodesPerLayer = m_msh->nod_vector.size() / (m_msh->getNumberOfMeshLayers() + 1);
 	size_t no_unconfined_layer = 0;
 	// create array with nodes in vertical column
-	size_t* strang(new size_t[m_msh->getNumberOfMeshLayers()]);
+	size_t* strang(new size_t[m_msh->getNumberOfMeshLayers()*2]);
 	for (size_t i = 0; i < NumberOfNodesPerLayer; i++)
 	{
 		if (m_msh->nod_vector[i]->free_surface == 4)