Overview of changes:

 *  Fixed first wave of packaging problems

    Non-determinism in tests, distro-specific names and missing parts
    of debian dir.  Some typos and bad substitutions on top of that.

    No functionality changes, except from borken to functional.

__SHELLFU_MODNAME__ is not yet subject to ENV:PREFIX, so this part has
to be hard-coded.  (Anyway, Debian will want it to ne /usr.)

Build checks are the first customer.

Overview of changes:

 *  Moved in from a Beakerlib module to a Shellfu/Bash module.

    That and added some basic set of TFKit tests.