[classworlds] Explain the reason for deprecating classworlds

[Mikolaj Izdebski]

commit f211559dd56382188364245fc22fae88a81a84eb
Author: Mikolaj Izdebski <mizdebsk at redhat.com>
Date:   Thu Jun 12 10:32:19 2014 +0200

    Explain the reason for deprecating classworlds

 dead.package |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/dead.package b/dead.package
index 0486c1f..5db1bd8 100644
--- a/dead.package
+++ b/dead.package
@@ -1 +1,5 @@
 Package is retired (superceded by plexus-classworlds)
+
+classworlds upstream has been dead for over 10 years.
+plexus-classworlds is an active fork of classworlds which adds many
+improvements and provides adapter for legacy classworlds API.