Add final(?) set of copyrights.

Add copyright to missing assembler files.
Add copyrights to missing test/* files.
Add copyrights
Various source and misc files.

Reviewed-by: Richard Levitte <levitte@openssl.org>

tools/c_rehash.in

diff --git a/tools/c_rehash.in b/tools/c_rehash.in
index dc66a9d..a23a8f3 100644
--- a/tools/c_rehash.in
+++ b/tools/c_rehash.in
@@ -1,6 +1,12 @@
 #!{- $config{perl} -}
 
 # {- join("\n# ", @autowarntext) -}
+# Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
 
 # Perl c_rehash script, scan all files in a directory
 # and add symbolic links to their hash values.