New binaries for Alpine Linux MUSL

[Nelson H. F. Beebe]

In offline exchanges with John Y <john_5555_ at outlook.com>, we made
experiments over the weekend with using Void Linux MUSL binaries on
Alpine Linux MUSL.  That failed because of differing shared library
versioning.

With some work, documented at

	http://www.math.utah.edu/pub/texlive-utah-2020/README.html#alpine

I'm pleased to announce a new set of binaries, including xindy and
Asymptote, for Alpine Linux and other systems that use MUSL instead of
GNU glibc.

The build was done with a recent (post-ISO) TeX Live source tree, so
TeX reports a version "2021/dev".  If that is a problem for anyone,
then I can likely redo the build with a source tree snapshot taken at
the time of the ISO release.

The Alpine binaries are for x86_64.  Four other architectures,
including x86, are supported by Alpine, but I have not built VMs for
any of them.  An x86 build would likely be straightforward, but I
don't plan to do so unless there is a need for it; x86 is pretty much
history, and Intel's CPU designs have largely focused on x86_64 since
2003 (see https://en.wikipedia.org/wiki/X86#x86-64).

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- Nelson H. F. Beebe                    Tel: +1 801 581 5254                  -
- University of Utah                    FAX: +1 801 581 4148                  -
- Department of Mathematics, 110 LCB    Internet e-mail: beebe at math.utah.edu  -
- 155 S 1400 E RM 233                       beebe at acm.org  beebe at computer.org -
- Salt Lake City, UT 84112-0090, USA    URL: http://www.math.utah.edu/~beebe/ -
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