udhcp: fix indentation and style.

Eliminate (group) a lot of smallish *.h files
Remove lots of unneeded #includes

networking/udhcp/common.c

@@ -10,23 +10,11 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <paths.h>
-#include <sys/socket.h>
-#include <stdarg.h>
 #include <syslog.h>
 
 #include "common.h"
-#include "pidfile.h"
 
 
-static int daemonized;
-
 long uptime(void)
 {
 	struct sysinfo info;
@@ -61,7 +49,6 @@ void udhcp_background(const char *pidfile)
 	pid_fd = pidfile_acquire(pidfile);
 	setsid();
 	xdaemon(0, 0);
-	daemonized++;
 	logmode &= ~LOGMODE_STDIO;
 	pidfile_write_release(pid_fd);
 #endif /* __uClinux__ */