Ensure that unused parameters are unused.

src/libraries/libisc-new/ChangeLog

+2003-07-13  Per Cederqvist  <ceder@ceder.dyndns.org>
+
+	Ensure that unused parameters are unused.
+	* src/unused.h (UNUSED_H_CONCAT): New macro.
+	(UNUSED): Mangle the name of the supposedly unused argument, so
+	that the compiler will report errors if it actually is used.
+
 2003-07-12  Per Cederqvist  <ceder@ceder.dyndns.org>
 
 	Fix new compilation errors.