Comment 7 for bug 1508178

Here is the original patch set description from Jamie Lentin:
 A collection of unrelated patches to improve support for the Thinkpad
 compact keyboards. The first 2 are just cleanup patches.

 The final patch alters the behaviour of the middle button so userspace
 either gets wheel events or a button click, not both. This stops
 browsers opening a link in a new tab as well as scrolling, for example.

 This means you can no longer long-middle-click, but I don't think this
 is likely to upset users as much as the current behaviour.