FINISH the socket interface building.

	新文件:       web/test/socket_client.php
	新文件:       web/test/socket_client_test.php
	新文件:       web/test/socket_server.php
	新文件:       web/test/socket_server_test.php
	ADD four test socket file

	修改:         websocket/applications/Chat/Event.php
	MOVE VirtualShell functions to the new file

	新文件:       websocket/applications/Chat/User/VirtualShell.php
	ABSTRACT user defined function to a single class