Can't drag the thumb of an input[type=range] when touch module is included.

[mirceageorgescu]

I made a fiddle to demonstrate this:

http://jsfiddle.net/mirceageorgescu/K6DGD/1/

Check 'Emulate touch events' in chrome dev tools. Or try it on a touch device.

I found that the issue is related to this commit: d945672

60 if (Math.abs(touch.x1 - touch.x2) > 10)
61  e.preventDefault()

[madrobby]

See also #786.