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/Base/MatrixPyImp.cpp

@@ -85,7 +85,7 @@ int MatrixPy::PyInit(PyObject* args, PyObject* /*kwd*/)
         return 0;
     }
 
-    PyErr_SetString(PyExc_Exception, "matrix or up to 16 floats expected");
+    PyErr_SetString(Base::BaseExceptionFreeCADError, "matrix or up to 16 floats expected");
     return -1;
 }
 
@@ -331,7 +331,7 @@ PyObject* MatrixPy::multiply(PyObject * args)
         return new VectorPy(new Vector3d(vec));
     }
 
-    PyErr_SetString(PyExc_Exception, "either vector or matrix expected");
+    PyErr_SetString(Base::BaseExceptionFreeCADError, "either vector or matrix expected");
     return 0;
 }
 
@@ -344,7 +344,7 @@ PyObject* MatrixPy::invert(PyObject * args)
         if (fabs(getMatrixPtr()->determinant()) > DBL_EPSILON)
             getMatrixPtr()->inverseGauss();
         else {
-            PyErr_SetString(PyExc_Exception, "Cannot invert singular matrix");
+            PyErr_SetString(Base::BaseExceptionFreeCADError, "Cannot invert singular matrix");
             return 0;
         }
     }
@@ -365,7 +365,7 @@ PyObject* MatrixPy::inverse(PyObject * args)
             return new MatrixPy(m);
         }
         else {
-            PyErr_SetString(PyExc_Exception, "Cannot invert singular matrix");
+            PyErr_SetString(Base::BaseExceptionFreeCADError, "Cannot invert singular matrix");
             return 0;
         }
     }