l4: ferret: Change a little ferret demos.

diff --git a/l4 b/l4
index 8abb6a185f8761b6928b3f183d384e842878de99..8c3e8038fdaee9c87eb5e17d775e98a63fd5cf76 160000 (submodule)
--- a/l4
+++ b/l4
@@ -1 +1 @@
-Subproject commit 8abb6a185f8761b6928b3f183d384e842878de99
+Subproject commit 8c3e8038fdaee9c87eb5e17d775e98a63fd5cf76