[PATCH][PUSHED] Native background for some more widgets

[Caolán McNamara]

On Thu, 2012-07-12 at 14:50 +0400, Ruslan Kabatsayev wrote:
> Hello,
> 
> These patches make TabBar and ToolBox have correct native background
> (needed for bg gradients and other non-flat-colored backgrounds).

This looks reasonable to me, so pushed now. Or is there side-effects
like the calc bottom tabbar stuff that means I shouldn't have pushed
it :-)

C.