jquery/jquery — pull request #1977 by araghava (2014-12-27 02:25:01+00:00)
Title: Event: fixing pageX/pageY mouse information in drag events

Copy over drag event properties from mouse events, fixes #1925.
See [here](https://github.com/jquery/jquery/blob/master/src/event.js#L524-L538) for where the actual copying happens.