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

server/drivers.h

@@ -1,11 +1,22 @@
-
-int
-load_driver( char * name, char * filename, char * args );
-// returns:
-// <0 error
-//  0 ok, driver is an input driver only
-//  1 ok, driver is an output driver
-//  2 ok, driver is an output driver that needs to run in the foreground
-
-int
-unload_all_drivers();
+/*
+ * drivers.h
+ * 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
+ *
+ */
+
+int
+load_driver( char * name, char * filename, char * args );
+// returns:
+// <0 error
+//  0 ok, driver is an input driver only
+//  1 ok, driver is an output driver
+//  2 ok, driver is an output driver that needs to run in the foreground
+
+int
+unload_all_drivers();