emcmodule: correct swapped arguments and pointer errors in pyvertex9

pt (3 elements) and pt1 (9 elements) were passed in reverse order to vertex9.  Py_BuildValue was also incorrectly passed pointers instead of values, causing pointer addresses to be returned to Python instead of actual coordinates.  This would have caused incorrect coordinates in the Axis backplot.

Author: snowgoer540

src/emc/usr_intf/axis/extensions/emcmodule.cc

@@ -2020,8 +2020,8 @@ static PyObject *pyvertex9(PyObject * /*s*/, PyObject *o) {
             &pt1[6], &pt1[7], &pt1[8]))
         return NULL;
 
-    vertex9(pt, pt1, geometry);
-    return Py_BuildValue("(ddd)", &pt[0], &pt[1], &pt[2]);
+    vertex9(pt1, pt, geometry);
+    return Py_BuildValue("(ddd)", pt[0], pt[1], pt[2]);
 }
 
 static PyObject *pygui_respect_offsets (PyObject * /*s*/, PyObject *o) {