[wineinstall] allow to use our computer while installing

[Alexandre Julliard]

Jérôme Bouat <jerome.bouat at wanadoo.fr> writes:

> This patch executes the compilation process with a higher nice value.
>
> It allows the user to do something else when he is installing Wine.

Users who want that behavior can renice wineinstall themselves, we
shouldn't impose that policy on everybody.

-- 
Alexandre Julliard
julliard at winehq.com