$NetBSD: patch-ag,v 1.2 2009/04/28 11:57:55 hasso Exp $

--- libhb/ports.h.orig	2009-01-20 20:52:23.000000000 -0500
+++ libhb/ports.h
@@ -37,7 +37,7 @@ typedef struct hb_thread_s hb_thread_t;
 #elif defined( SYS_DARWIN )
 #  define HB_LOW_PRIORITY    0
 #  define HB_NORMAL_PRIORITY 31
-#elif defined( SYS_LINUX ) || defined( SYS_FREEBSD ) || defined ( SYS_SunOS )
+#elif defined( SYS_LINUX ) || defined( SYS_FREEBSD ) || defined ( SYS_SunOS ) || defined( SYS_NETBSD ) || defined( SYS_DRAGONFLY )
 #  define HB_LOW_PRIORITY    0
 #  define HB_NORMAL_PRIORITY 0
 #elif defined( SYS_CYGWIN )