Add/update copyrights+license (with help of a shell script).

[SVN r35851]

src/util/assert.jam

@@ -1,7 +1,8 @@
-#  (C) Copyright David Abrahams 2001. Permission to copy, use, modify, sell and
-#  distribute this software is granted provided this copyright notice appears in
-#  all copies. This software is provided "as is" without express or implied
-#  warranty, and with no claim as to its suitability for any purpose.
+# Copyright 2001, 2002, 2003 Dave Abrahams 
+# Copyright 2006 Rene Rivera 
+# Copyright 2002, 2003 Vladimir Prus 
+# Distributed under the Boost Software License, Version 1.0. 
+# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) 
 
 import errors : error-skip-frames lol->list ;
 import modules ;
@@ -138,4 +139,4 @@ rule not-in ( element : list * )
         error-skip-frames 3 assertion failure: did not expect $(element) in 
                           "[" $(list) "]" ;
     }
-}
+}