openlayers/ol3 — pull request #168 by fredj (2013-01-29 13:56:04+00:00)
Title: Touch events support

This PR adds support to touch events (W3C and IE).

`ol.MapBrowserEventHandler` triggers three new event:
* `TOUCHSTART`
* `TOUCHMOVE`
* `TOUCHEND`

The mouse and touch events are splitted (`handleMouse*`and `handleTouch*`)

Because we use an old version of the closure lib, I had to backport the IE events names into the temporary `ol.MapBrowserEvent.IEEventType` enum.

**on touch devices, the pan no longer works, it must be added before merging**