Additionally:
* Use system libcurl, so the patch downloader can work
* Use system zlib
* Use system libusb
* Add note about using system WolfSSL
* Enable SDL2, so the FAudio backend can work
* Change license to gpl2Only, as per [1]
[1]: https://github.com/RPCS3/rpcs3/issues/10255#issuecomment-835512840
After making `ffmpeg` point to the latest `ffmpeg_4`, all packages that
used `ffmpeg` without requiring a specific version now use ffmpeg_3
explicitly so they shouldn't change.
* rpcs3: 0.0.4-8032 -> 0.0.5-6884
* rpcs3: update hash
* rpcs3: 0.0.5-6884 -> 0.0.5-6925
* rpcs3: 0.0.5-6925 -> 0.0.5-6938
* rpcs3: 0.0.5-6938 -> 0.0.5-6980
Manually write version header instead of generating it with git, which required leaveDotGit to be enabled.
This caused some hash mismatches (see #8567) has thus been disabled.