Added myself to COPYING and some metainfo to trivial-gray-streams.asd

COPYING

@@ -1,4 +1,5 @@
     Copyright (c) 2005 David Lichteblau
+    Copyright (c) 2013 Anton Vodonosov <avodonosov@yandex.ru>
 
     Permission is hereby granted, free of charge, to any person
     obtaining a copy of this software and associated documentation files

trivial-gray-streams.asd

@@ -1,6 +1,10 @@
 ;;; -*- mode: lisp -*-
 
 (defsystem :trivial-gray-streams
+  :description "Compatibility layer for Gray Streams (see http://www.cliki.net/Gray%20streams)."
+  :license "MIT"
+  :author "David Lichteblau"
+  :maintainer "Anton Vodonosov <avodonosov@yandex.ru>"
   :version "2.0"
   :serial t
   :components ((:file "package") (:file "streams")))