[tlbuild] 2021 pretest initial binaries

[Norbert Preining]

Hi Karl

> (I've started the github build for {x86_64,i386}-linux[musl] and will

And surprisingly it did build ... considering the changes in policy.
Hope that works out for this cycle.

Best

Norbert

--
PREINING Norbert                              https://www.preining.info
Fujitsu Research Labs  +  IFMGA Guide + TU Wien + TeX Live + Debian Dev
GPG: 0x860CDC13   fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13