Sync usage with man page. From Bug Hunting in PR 46102.

Sort options in man page. Add EXIT STATUS section. Bump date.
Sync usage with man page.

Mostly from Bug Hunting in PR 46102.

Use __dead

Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Make this compile again. Cast char variable to int before comparing
> 0x7f, so that this gives the same result for machines with signed
and unsigned char.

Fix handling of control and non-ascii charachters. Print a space
instead of what happens to be at that position (out of bounds)
in the char array. Prompted by OpenBSD PR/3147.

Correct handling of empty arguments as reported in OpenBSD PR/3146.
While there use strlcpy instead of strncpy and STDOUT_FILENO instead of 1.

use getprogname()

getopt(3) returns -1 not EOF.
Add usage().
Un-__P and ANSIfy.

Make gcc 2.96 (and maybe earlier) happier. Include <stdlib.h>,<string.>,
etc. as appropriate to get exit,srncmp,abs,abort,etc.
Add -I${.CURDIR} to a few Makefiles

Allow the LPD font to be selected at runtime rather than compile time.
Also added -f fg and -b bg switches to control the fore/back ground
"colors". One can now do inverse :-)

WARNSify, fix .Nm usage

clean up RCS Ids, etc.

a /usr/bin/banner clone, written by Simon J. Gerraty