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/serial_test.c

@@ -15,8 +15,11 @@
  * SOFTWARE.
  */
 
+#include <config.h>
+
 #include <stdio.h>
 #include <stdlib.h>
+
 #include <isc/serial.h>
 
 int
@@ -25,7 +28,6 @@ main() {
 	char buf[1024];
 	char *s, *e;
 
-
 	while (fgets(buf, sizeof buf, stdin) != NULL) {
 		buf[sizeof buf - 1] = '\0';
 		s = buf;