fixes #0001422: Subclass Exception

inherit Base.FreeCADError form RuntimeError
inherit Part.OCCError from Base.FreeCADError
inherit OCCDomainError from Part.OCCError
inherit OCCRangeError from Part.OCCError
inherit OCCConstructionError from OCCDomainError
inherit OCCDimensionError from OCCDomainError
Added PY_CATCH_OCC macro
replace PyExc_Exception
use FreeCADError in makeWireString
catch exception in BSplineCurve.increasedegree

src/Mod/Part/App/SurfaceOfExtrusionPyImp.cpp

@@ -32,6 +32,7 @@
 
 #include <Base/GeometryPyCXX.h>
 #include <Base/VectorPy.h>
+#include "OCCError.h"
 
 using namespace Part;
 
@@ -74,7 +75,7 @@ int SurfaceOfExtrusionPy::PyInit(PyObject* args, PyObject* /*kwd*/)
     }
     catch (Standard_Failure) {
         Handle_Standard_Failure e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PartExceptionOCCError, e->GetMessageString());
         return -1;
     }
 }