stdiotelnetd

This is a simple TCP server wrote around `libtelnet` library and using telnet protocol for the communication. By default it waits on a given TCP port and when contacted by a telnet client, it enables interactive communication between the users sitting on either side of the connection. It can also execute a program specified as a command line argument (with its own arguments passed through as needed) having both `stdin`/`stdout` of this program redirected to any telnet client connected. Note that only one instance of the program will ever be spawned, hence all of the connected clients will be seeing the same content, effectively being able to observe the effects of the other connected users actions (namely, if the spawned program responds with echo, all the users will be seeing what the others are typing).