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.
    */

bin/tests/zone2_test.c

@@ -15,25 +15,25 @@
  * SOFTWARE.
  */
 
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
 #include <config.h>
 
+#include <stdlib.h>
+#include <unistd.h>
+
 #include <isc/app.h>
-#include <isc/assertions.h>
-#include <isc/error.h>
 #include <isc/mem.h>
+#include <isc/string.h>
 #include <isc/util.h>
 
 #include <dns/confparser.h>
 #include <dns/journal.h>
+#include <dns/fixedname.h>
+#include <dns/rdataset.h>
+#include <dns/result.h>
 #include <dns/view.h>
 #include <dns/zone.h>
 #include <dns/zoneconf.h>
 #include <dns/zt.h>
-#include <dns/result.h>
 
 #define ERRRET(result, function) \
 	do { \