bug#7381: 24.0.50; Provide a hook run when a window is selected

[martin rudalics]

> Well, I did checkout that branch (I'm using the Git mirror), but it
> seems to include much more changes than `window-use-time' and
> `get-mru-window', and the last merge from trunk is from 30. October.

The last time I merged from trunk and pushed back was yesterday so maybe
the Git mirror hasn't been updated yet.

> You
> mean you'd like to merge it into the trunk as a whole in the near
> future, so you're looking for more testers?

I need people who confim that it doesn't break their daily workflow
before merging anything into the trunk.

martin