removed some unused vars from Curve and matrix

scn.objects.new(None) - adds a new empty
 - new objects are selected by default now

further stripped down the vector struct, the wrapped state was being stored and 2 places.

source/blender/python/api2_2x/matrix.c

@@ -695,7 +695,6 @@ static PyObject *Matrix_mul(PyObject * m1, PyObject * m2)
 	double dot = 0.0f;
 	MatrixObject *mat1 = NULL, *mat2 = NULL;
 	PyObject *f = NULL;
-	VectorObject *vec = NULL;
 	PointObject *pt = NULL;
 
 	mat1 = (MatrixObject*)m1;
@@ -963,4 +962,4 @@ PyObject *newMatrixObject(float *mat, int rowSize, int colSize, int type)
 		return NULL;
 	}
 	return (PyObject *) self;
-}
+}