[libsidplay] Update dead.package to point to the obsoleting libsidplayfp review request

[Hans de Goede]

commit 14768ea060b2cc3a7f39cd8da328425a3d19169d
Author: Hans de Goede <hdegoede at redhat.com>
Date:   Sat Apr 13 15:15:45 2013 +0200

    Update dead.package to point to the obsoleting libsidplayfp review request

 dead.package |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/dead.package b/dead.package
index 53da43c..1b92a3c 100644
--- a/dead.package
+++ b/dead.package
@@ -1,2 +1,3 @@
 2012-05-30 - No compelling reason to include this ancient lib anymore.
-The more capable libsidplay2 and libsidplayfp are still non-free, however.
+2013-04-14 - Obsoleted by the now free libsidplayfp, review request here:
+  https://bugzilla.redhat.com/show_bug.cgi?id=951820