initial revision
cleaned up and added functions for doing so. next step is to change the server to a chat server.
started debugging Readline() to determine crash situation when client disconnects aka severs socket.
updated old server code to fix bug with client severing connection.
added write_client function
updated client_write function to use a variable arguments list.
implemented chat functionality in process_client_msg function.  mutex and global buffer initialized but not used (don't believe these are necessary).
implemented locking for each socket to be written to.  think this is good, but needs verification to determine messages will not get mangled.
intermediate checkin, added write_all_clients function.
updated to include messages to all clients when a client arrives or leaves.
updated max conn