[Development] qmake 5.0 question about available modules

[Chris Meyer]

In 4.8, qmake could include a line 'QT += xmlpatterns'. This does not
work in 5.0 qmake (although 'QT += xml' does).

Why aren't all of the 5.0 modules available in qmake?

Was this a configuration error on my part (I built from source,
omitting webkit), or is limited modules intentional, or is it a bug?

I'd like to be able to do 'QT += xml xmlpatterns multimedia
multimediawidgets' etc.