Updates banana.

Signed-off-by: Stéphane Jacob <sj@m4x.org>

diff --git a/banana b/banana
index 8575148..4e9340f 160000 (submodule)
--- a/banana
+++ b/banana
@@ -1 +1 @@
-Subproject commit 8575148f767c35d84122edf39f9a416010d9e532
+Subproject commit 4e9340f51e50affa2b89211981580d33a27a9ff4