0024002: Overall code and build procedure refactoring -- automatic

Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl":
- WOK-generated header files from inc and sources from drv are moved to src
- CDL files removed
- All packages are converted to nocdlpack

src/MAT/MAT_BasicElt.cxx

@@ -14,9 +14,12 @@
 // Alternatively, this file may be used under the terms of Open CASCADE
 // commercial license or contractual agreement.
 
-#include <MAT_BasicElt.ixx>
-#include <MAT_SequenceOfArc.hxx>
+
+#include <MAT_Arc.hxx>
+#include <MAT_BasicElt.hxx>
 #include <MAT_Node.hxx>
+#include <MAT_SequenceOfArc.hxx>
+#include <Standard_Type.hxx>
 
 //========================================================================
 // function: