Update a few remaining zlib source files

third_party/zlib/README.cosmo

@@ -1,13 +1,19 @@
 DESCRIPTION
 
-  zlib implements the deflate compression algorithm.
+  zlib implements the deflate compression algorithm
+
+LICENSE
+
+  See LICENSE file
 
 ORIGIN
 
-  https://chromium.googlesource.com/chromium/src/third_party/zlib
-  commit 8f22e90f007a7dd466b426513725c13191248315
-  Author: Hans Wennborg <hans@chromium.org>
-  Date:   Fri Sep 16 16:14:51 2022 +0000
+  The zlib sources were obtained from Chromium's zlib fork.
+
+    https://chromium.googlesource.com/chromium/src/third_party/zlib
+    commit 8f22e90f007a7dd466b426513725c13191248315
+    Author: Hans Wennborg <hans@chromium.org>
+    Date:   Fri Sep 16 16:14:51 2022 +0000
 
     [zlib][fuzz] Cap the input size for zlib_inflate_with_header_fuzzer
     
@@ -23,8 +29,23 @@ ORIGIN
     NOKEYCHECK=True
     GitOrigin-RevId: fd75b8c2768e7cc3a3e7a06bc563bb03c5ba0ec2
 
+  The source code for puff was obtained from zlib itself:
+
+    Origin: git@github.com:madler/zlib.git
+    Commit: 03614c56ad299f9b238c75aa1e66f0c08fc4fc8b
+    Author: Mark Adler <madler@alumni.caltech.edu>
+    Date:   Sun Oct 30 08:36:13 2016 -0700
+
 LOCAL CHANGES
 
-  - Changed Trace() calls to use kprintf()
   - Use X86_HAVE() for runtime dispatching
+
+  - Changed Trace(stderr) calls to use kprintf()
+
   - We use our own crc32() implementation from LIBC_STR
+
+  - Fix a Chromium Zlib regression where malloc() failures inside
+    deflateInit2() will result in a segmentation fault
+
+  - Provide THIRD_PARTY_ZLIB_GZ as a separate package, because it
+    can't work without malloc/stdio/etc. but the rest of zlib can