Socket example code

All of these examples are adaptations of examples from "Unix Network Programming" by Richard Stevens.

• Makefile
• myserver.c
• myclient.c
• inetserver.c
• inetclient.c
• forkserver.c
• forkclient.c
• wrapsock.c
• wrapsock.h
• readline.c
• readn.c
• writen.c
• tcpservselect01.c
• threadserver.c