Merge r3964: Portability fixes from pkgsrc/NetBSD

Apply portability patches from pkgsrc, thanks to michael for
forwarding those.

Fixes #471



git-svn-id: http://www.varnish-cache.org/svn/branches/2.0@3994 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_pool.c

@@ -48,7 +48,7 @@
 #include <sys/uio.h>
 
 #ifdef SENDFILE_WORKS
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
 #include <sys/socket.h>
 #elif defined(__linux__)
 #include <sys/sendfile.h>
@@ -208,7 +208,7 @@ WRW_Sendfile(struct worker *w, int fd, off_t off, unsigned len)
 	assert(fd >= 0);
 	assert(len > 0);
 
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
 	do {
 		struct sf_hdtr sfh;
 		memset(&sfh, 0, sizeof sfh);

bin/varnishhist/varnishhist.c

@@ -34,6 +34,7 @@
 
 #include "config.h"
 
+#include <sys/types.h>
 #include <curses.h>
 #include <errno.h>
 #include <limits.h>

bin/varnishreplay/varnishreplay.c

@@ -30,6 +30,7 @@
 
 #include "config.h"
 
+#include <sys/types.h>
 #include <sys/signal.h>
 #include <sys/uio.h>