gdl.icn: Procedures to get directory lists

link gdl
May 2, 2001; Richard L. Goerwitz
Requires: UNIX or MS-DOS
This file is in the public domain.

Gdl returns a list containing everything in a directory (whose name
must be passed as an argument to gdl).  Nothing fancy.  I use this file
as a template, modifying the procedures according to the needs of the
program in which they are used.