Add new 'pointer' property to the map

[fredj]

pointer is the coordinate of the mouse or touch.

[fredj]

setPointer should not be exported

[tschaub]

What will this be for multi-touch?

[fredj]

the coordinate of the first touch (index 0). done by goog closure.

[fredj]

Not sure this is really needed, coordinates are available in the event object:

map.on('mousemove', function(event) {
  var coordinates = event.getCoordinate();
});