[Update requested] Please update the script to the latest libraries (cmake, nettle, gnutls, autowaf,serd,sord, lv2,lilv)

[someziggyman]

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Thank you so much for such a great script! Some improvements should to be made though:

1. Update cmake, nettle, gnutls for successful builds on M1 Macs (https://github.com/markus-perl/ffmpeg-build-script/commit/87479d967bd26ca33f10ee198e8d752a522878ff#commitcomment-83736660)
2. update autowaf,serd,sord, lv2,lilv (might have missed some other lib as well). Currently it's impossible to use the latest versions of those, because most of them do not ship WAF executable file inside of it. The script uses that WAF though. Not a programmer so no idea what it does or how to make the script work without it. Example: latest version of Serd is v0.30.16 there's no WAF inside. So, to make the script work I had to use https://gitlab.com/drobilla/serd/-/archive/v0.30.12/serd-v0.30.12.tar.gz cause it's the latest one that had was executable inside.

Hope it helps. If you need to run some testing on M1 machine, please let me know.