Megacommit of dozens of files.

Cleanup of redundant/useless header file inclusion.

ISC style lint, primarily for function declarations and standalone
comments -- ie, those that appear on a line without any code, which
should be written as follows:
   /*
    * This is a comment.
    */

lib/dns/dbtable.c

@@ -16,7 +16,7 @@
  */
 
 /*
- * $Id: dbtable.c,v 1.17 2000/05/02 03:53:52 tale Exp $
+ * $Id: dbtable.c,v 1.18 2000/05/08 14:34:31 tale Exp $
  */
 
 /*
@@ -25,6 +25,7 @@
 
 #include <config.h>
 
+#include <isc/mem.h>
 #include <isc/rwlock.h>
 #include <isc/util.h>