
Samples:
	login.c  -  opens a pty and executes a /bin/login in it.

	test1.c/test2.c - Establishes a basic connection between two points
		Very simple

	client.c/server.c - Complicated example showing
		a server maintaining multiple connections and
		a client that connects to it.

	ptest.c - Test the modified perror routine.


Index of function usage:

FUNCTION        FILE                    ROUTINE     LINE
----------------------------------------------------------
addfd()		client.c		do_prog	    63  65
		server.c		do_prog	    75  84

answer()	server.c		do_prog	    80

attach()	server.c		do_prog	    64
		test1.c			main	    7

block()		client.c		do_prog	    68
		server.c		do_prog	    78

clrutmp()	login.c			gork	    20

delfd()		server.c		do_prog	    93

hostname()	ptest.c			main	    9
		test2.c			main	    4

initfd()	client.c		do_prog	    61
		server.c		do_prog	    73

isignal()	login.c			main	    55

loadtty() 	login.c			--	    46

openpty()	login.c			main	    48

phone()		client.c		do_prog	    57  59
		ptest.c			main	    9  13
		test2.c			main	    4

pkill()		server.c		do_prog	    71  95
		server.c		exiter	    18
		test1.c			main	    12  13
		test2.c			main	    7

stty()		login.c			main	    50  51  64  65

useport()	client.c		do_prog	    57  59
		server.c		do_prog	    64
		test1.c			main	    7
		test2.c			main	    4
