Add qt6
The goal is to support both Qt5 and Qt6 when building the examples and also when building the Cxx tarballs.
System updates will be applied on Nov 27th between 7am and 9am, EST (UTC-05:00). This site will have intermittent downtime during that time.
The goal is to support both Qt5 and Qt6 when building the examples and also when building the Cxx tarballs.