Allow custom mousemove conditions

When configuring a Select interaction with a custom condition that
includes mousemove, panning the map will not work any more. This is
because the return value of handleMapBrowserEvent is determined by
checking for a default condition function. By checking for the
underlying event type instead, we gain flexibility with custom condition
functions.

src/ol/interaction/selectinteraction.js

@@ -179,7 +179,7 @@ ol.interaction.Select.prototype.handleMapBrowserEvent =
     }
     features.extend(selected);
   }
-  return this.condition_ == ol.events.condition.mouseMove;
+  return ol.events.condition.mouseMove(mapBrowserEvent);
 };