[lat] Add reason for retirement

[Paul Howarth]

commit 46d354de1607115efd1442096443dcc47e54e50e
Author: Paul Howarth <paul at city-fan.org>
Date:   Mon Jun 13 11:20:00 2011 +0100

    Add reason for retirement

 dead.package |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/dead.package b/dead.package
index f2396d2..5537e6e 100644
--- a/dead.package
+++ b/dead.package
@@ -1 +1,4 @@
-Package is retired
\ No newline at end of file
+Package is retired
+
+Upstream seems to be dead (last commit 18 months or so before F15 release),
+and new dbus-sharp in F16 contains incompatible API change.