new version from Keith Muller (muller@sdcc3.ucsd.edu)
4.4BSD snapshot (revision 8.1); add 1993 to copyright
put the wrong prototype name in for ar_drain().
added routine to drain pipes. bug from donn seeley.
made copyright a static
added support for -D and -Y.
date and time created 92/12/17 19:22:20 by muller