[banshee] Update Hyena to latest git master

[Bertrand Lorentz <blorentz src gnome org>]

commit 6e4066c72adb0180aec3429645705ac09fb6d70f
Author: Bertrand Lorentz <bertrand lorentz gmail com>
Date:   Fri Aug 15 13:39:36 2014 +0200

    Update Hyena to latest git master
    
    This brings in the fixes for compilation warnings with mono 3.6.0.

 src/Hyena |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Hyena b/src/Hyena
index d7e10dd..d203421 160000
--- a/src/Hyena
+++ b/src/Hyena
@@ -1 +1 @@
-Subproject commit d7e10dd1778e53e33c44888cab5a5e4ea8d2c4eb
+Subproject commit d20342107425e71e77541aea16558f146322e570