Buildworld from FreeBSD4.8

[germain at purdue.edu]

This made the buildworld work when going from freebsd 4.8 to dragonfly


gold# diff -uN exec_aout.c.old  exec_aout.c
--- exec_aout.c.old     Sat Feb  7 17:52:53 2004
+++ exec_aout.c Sat Feb  7 17:24:56 2004
@@ -42,6 +42,10 @@

 #include "extern.h"

+#ifndef __DragonFly__
+#define __DragonFly__
+#endif
+
 #if defined(NLIST_AOUT)

 int nsyms, ntextrel, ndatarel;