Preliminary OpenBSD host support (based on OpenBSD patches by Todd T. Fries)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5012 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/vl.c b/vl.c
index 6ade2ad..0d6343f 100644
--- a/vl.c
+++ b/vl.c
@@ -61,9 +61,12 @@
 #include <arpa/inet.h>
 #ifdef _BSD
 #include <sys/stat.h>
-#ifndef __APPLE__
+#if !defined(__APPLE__) && !defined(__OpenBSD__)
 #include <libutil.h>
 #endif
+#ifdef __OpenBSD__
+#include <net/if.h>
+#endif
 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
 #include <freebsd/stdlib.h>
 #else