Adapt compat.sh to GnuTLS 3.4
diff --git a/tests/compat.sh b/tests/compat.sh
index 554adef..5a3c222 100755
--- a/tests/compat.sh
+++ b/tests/compat.sh
@@ -679,7 +679,7 @@
     P_SERVER_ARGS="server_port=$PORT server_addr=0.0.0.0 force_version=$MODE arc4=1"
     O_SERVER_ARGS="-accept $PORT -www -cipher NULL,ALL -$MODE"
     G_SERVER_ARGS="-p $PORT --http"
-    G_SERVER_PRIO="EXPORT:+NULL:+MD5:+PSK:+DHE-PSK:+ECDHE-PSK:+RSA-PSK:-VERS-TLS-ALL:$G_PRIO_MODE"
+    G_SERVER_PRIO="NORMAL:+ARCFOUR-128:+NULL:+MD5:+PSK:+DHE-PSK:+ECDHE-PSK:+RSA-PSK:-VERS-TLS-ALL:$G_PRIO_MODE"
 
     P_CLIENT_ARGS="server_port=$PORT force_version=$MODE"
     O_CLIENT_ARGS="-connect localhost:$PORT -$MODE"