[tlbuild] Support for musl

[Norbert Preining]

> Is this possible with the docker stuff, too?

It is, just install findutils and run it ;-)

I adjusted the travis file - reading the log it seems that the
  cd texlive
is not necessary in the docker command, though.

See current .travis.yml on github

Norbert

--
PREINING Norbert                               http://www.preining.info
Accelia Inc.     +    JAIST     +    TeX Live     +    Debian Developer
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