This directoy is intended to house automated regression tests.  It supplements
the ../src/slgtk-demo utility (and the ../examples guilets upon which it is
based) by focusing more on the explicit testing of failure conditions.

Each test is an S-Lang script, but ends with a .t suffix instead of the
usual .sl.  This makes it easier to distinguish between test scripts
and supporting code.

The regression suite requires the installation of TESS, the (Te)st
(S)ystem for (S)-Lang.
