SDL2-2.0.5-10.1

- Add CVE-2022-4743.patch: fix potential memory leak in
  GLES_CreateTexture (boo#1206727 CVE-2022-4743).

- Some metadata spruce-up: add current URLs, softer wildcarding
  in the files list, more robust make install call
- Reduce build dependencies
- Optional signature verification in local builds