DG/UX thread patches (Ross Andrus)
diff --git a/Python/thread.c b/Python/thread.c
index 2d04256..1698b07 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -49,6 +49,10 @@
 #include <unistd.h>
 #endif
 
+#ifdef __DGUX
+#define _USING_POSIX4A_DRAFT6
+#endif
+
 #ifdef __sgi
 #ifndef HAVE_PTHREAD_H /* XXX Need to check in configure.in */
 #undef _POSIX_THREADS