SF bug #999776, zlib home page wrong

Backport candidate.
diff --git a/Modules/Setup.dist b/Modules/Setup.dist
index 6074b1b..3031358 100644
--- a/Modules/Setup.dist
+++ b/Modules/Setup.dist
@@ -462,7 +462,7 @@
 
 # Andrew Kuchling's zlib module.
 # This require zlib 1.1.3 (or later).
-# See http://www.cdrom.com/pub/infozip/zlib/
+# See http://www.gzip.org/zlib/
 #zlib zlibmodule.c -I$(prefix)/include -L$(exec_prefix)/lib -lz
 
 # Interface to the Expat XML parser