<sys/socket.h>, <netinet/{in,tcp,udp,udp_var}.h>

. add sa_len to sockaddr, sin_len to sockaddr_in
	. rename SCM_CREDENTIALS to SCM_CREDS
	. retire PF_FILE (same as PF_UNIX)

Change-Id: Id3ec63fe2556fc7ceb48de8ad4e80736df3ddfc7

libexec/ftpd/ftpd.c

@@ -113,10 +113,8 @@ __RCSID("$NetBSD: ftpd.c,v 1.198 2012/06/19 06:06:34 dholland Exp $");
 #include <sys/resource.h>
 
 #include <netinet/in.h>
-#ifndef __minix
 #include <netinet/in_systm.h>
 #include <netinet/ip.h>
-#endif
 
 #define	FTP_NAMES
 #include <arpa/ftp.h>