New comment by mvf on void-packages repository

https://github.com/void-linux/void-packages/pull/45712#issuecomment-2001897977

Comment:
@Duncaen Any chance you could review this? `mkvtoolnix` is built with [Rake](https://github.com/ruby/rake) and now requires Qt6, so I had to add a new `qmake6` build helper. Changes from the Qt5 `qmake` build helper (in top-down order in the file):

- `qt.conf`: `examples` now sit under `/usr/lib` (previously `/usr/share`)
- `qt.conf`: New key `HostLibraryExecutables` points to `moc` & friends that were moved from `bin` to `libexec`
- Additional `qmake6` alias to match the one in `/usr/lib/qt6/bin` (Debian even has a `/usr/bin/qmake6`)

Thanks!