[mythtv] Qt 5 support

[Ian Campbell]

On Mon, 2026-08-17 at 19:00 -0400, David Hampton via mythtv-dev wrote:
> On Fri, 2026-08-14 at 15:36 -0400, David Hampton wrote:
> > I still regularly compile and test both Qt5 and Qt6, but it doubles
> > the amount of work.  Two Linux builds, eight android builds (four
> > architectures times two versions of qt), etc. etc.
> 
> Is anyone else running Qt6 based images?

Christian switched the DMO packages for Debian over to Qt6 after the
fixes made earlier this year, so since late April.

Ian.