rename of avahi to catta

[meshlink] / catta

diff --git a/catta b/catta
index 7a5b2f69af7d36d6cd4153142f125fa011784e03..a4c3af8516b1384e2856904719e75cda5bf6d669 160000 (submodule)
--- a/catta
+++ b/catta
@@ -1 +1 @@
-Subproject commit 7a5b2f69af7d36d6cd4153142f125fa011784e03
+Subproject commit a4c3af8516b1384e2856904719e75cda5bf6d669