Add other people who've done stackification.

CHANGES

diff --git a/CHANGES b/CHANGES
index d85f5c4..68ba547 100644
--- a/CHANGES
+++ b/CHANGES
@@ -169,7 +169,7 @@
      [Ben Laurie]
 
   *) Convert various additional casted stacks to type-safe STACK_OF() variants.
-     [Ben Laurie, Ralf S. Engelschall]
+     [Ben Laurie, Ralf S. Engelschall, Steve Henson, Bodo Moeller]
 
   *) Introduce type-safe STACKs. This will almost certainly break lots of code
      that links with OpenSSL (well at least cause lots of warnings), but fear