Added uniform copyright notice to all files of the server core.

server/client_functions.c

@@ -1,13 +1,21 @@
 /*
-  client_functions.c
-
-  This contains definitions for all the functions which clients can run.
-  The functions here are to be called only from parse.c's interpreter.
-
-  The client's available function set is defined here, as is the syntax
-  for each command.
-
-*/
+ * client_functions.c
+ * This file is part of LCDd, the lcdproc server.
+ *
+ * This file is released under the GNU General Public License. Refer to the
+ * COPYING file distributed with this package.
+ *
+ * Copyright (c) 1999, William Ferrell, Scott Scriven
+ *               2001, Joris Robijn
+ *
+ *
+ * This contains definitions for all the functions which clients can run.
+ * The functions here are to be called only from parse.c's interpreter.
+ *
+ * The client's available function set is defined here, as is the syntax
+ * for each command.
+ *
+ */
 
 #include <unistd.h>
 #include <stdlib.h>