[Clfs-support] CLFS embedded book switches to musl-libc

[Andrew Bradford]

As an FYI: the Cross Linux From Scratch embedded book has switched from
uClibc to musl as of today.

http://cross-lfs.org/view/clfs-embedded/

I've done some build testing for arm but welcome more people who are
interested in testing or submitting patches to fix errors.  It's still
early-days for musl in CLFS so there's bound to be plenty of issues to fix.

Many thanks to all of the musl developers!

I also found patches from Gregor Richards's musl-cross and Thomas
Petazzoni's buildroot work very helpful.

Thanks!
Andrew