split adt files and removed grid_adaptation and SU2_MSH. Both build systems work

Author: jayantmukho

Common/include/adt_structure.hpp

@@ -61,7 +61,7 @@ extern "C" {
 #include "../CConfig.hpp"
 #include "../fem/geometry_structure_fem_part.hpp"
 #include "../toolboxes/graph_toolbox.hpp"
-#include "../adt_structure.hpp"
+#include "../adt/CADTElemClass.hpp"
 
 using namespace std;