COMP: PointsLocator wrapping on Windows

Addresses:

```
itkPointsLocator: warning(4): ITK type not wrapped, or currently not known: itk::VectorContainer< unsigned long, itk::Point< float, 3 > >
```

Also use wrapping variables for `Point`, wrapped based on wrapping
settings.

Modules/Registration/Common/wrapping/itkPointsLocator.wrap

@@ -1,3 +1,7 @@
 itk_wrap_class("itk::PointsLocator" POINTER_WITH_2_SUPERCLASSES)
-  itk_wrap_template("PS${ITKM_F}3" "itk::VectorContainer<${ITKT_UL}, itk::Point<float, 3> >")
+  foreach(d ${ITK_WRAP_IMAGE_DIMS})
+    foreach(t ${WRAP_ITK_REAL})
+      itk_wrap_template("VC${ITKM_IT}${ITKM_P${t}${d}}" "itk::VectorContainer<${ITKT_IT}, ${ITKT_P${t}${d}} >")
+    endforeach()
+  endforeach()
 itk_end_wrap_class()