[mythtv] Auto-detect UI painter

[Rob Smith]

On Wed, Feb 16, 2011 at 4:12 AM, Lawrence Rust <lvr at softsystem.co.uk> wrote:
> Personally, I can't see what's wrong with keeping the current UI
> control, defaulting to auto, and allowing the user to force Qt
> permanently if they need to.

We've talked about ditching the QT painter entirely so I'm not sure
allowing the user to force QT permanently and not reporting the bugs
with the D3D9 painter to us is a good solution.