[tex-hyphen] Hyphenation patterns for Belarusian

[Arthur Reutenauer]

	Hi Maksim,

> Thanks! I've decided to use your library and ended up with almost the same script
> https://github.com/msalau/hyph-be/blob/master/showhyphens.rb
> It accepts words either as arguments or from stdin.

  Good, I saw that in the mean time :-)

> This is the hard part :) All combinations (both possible and impossible) take really huge amount of space. I'm considering parsing the hunspell dictionary to get only possible combinations.

  Yes, that’s what I was suggesting.

  Regardings experiments with real documents, you need a
gloss-belarusian.ldf if you want to test with Polyglossia, and there are
various minor issues that mean your document should work with only a
small amount of change; see document-arthur.tex in my fork of your
repository (https://github.com/reutenauer/hyph-be) and
gloss-belarusian.ldf in the same directory.

	Best,

		Arthur