emulators/qemu52: Moved to emulators/qemu5
- Has been updated to 5.2.0.
- This is the last version of 5.X.X branch of qemu and part of updating emulators/qemu to latest 6.X.X branch.
- Added a stripped down version of qemu5-nox11 with FLAVORS
- Removed some reference to oszoo.org which no longer hosts qemu images and is totally an irrelevent site