This directory contains test programs.

Each program has name MODULE-test.c where MODULE is the name of the source
tested by that program, typically a library module. The directories tree
mirrors the src/ tree, so making easier to locate each module test program.

Each program should perform its test silently and terminate with exit code zero
on success, or non-zero on error (in this latter case some diagnostic message
should be sent to stdout or stderr).

To launch all the test program in a directory:

	$ make test

To launch only a specific test:

    $ make MODULE-test && ./MODULE-test

FIXME: there are some unfinished test programs here and there.
