[PATCH] compositor: fix release button notification

[Rob Bradford]

On 7 December 2011 14:32, Tiago Vignatti <vignatti at freedesktop.org> wrote:
> From: Tiago Vignatti <tiago.vignatti at intel.com>
>
> Previously the client could set another grab via wl_input_device_update_grab,
> which would lead the compositor not delivering some button events. Now,
> independently the semantics the client defines, the compositor will send
> anyway a button event to the client, fixing the apparent issue.
>

This change also has the side-effect of changing the semantics in a
non-resize case: button inside surface move outside it and then
release.

With this change you don't get a button up when the pointer has moved
outside the surface - something the implicit grab was trying to
achieve.

Just the addition in this patch (not the removal) does give me
behaviour that maps to what GTK expects.

Cheerio,

Rob