zlib (vendored into calog)
==========================

zlib, the general-purpose lossless compression library by Jean-loup Gailly and
Mark Adler (https://zlib.net). calog builds it from source into lib/libz.a as the
DEFLATE backend for the archive/compression library (libarchive's gzip/zip filters)
and as a single, reproducible source of truth for zlib across the whole build.

Vendored from zlib 1.3.1: the 15 library .c files + zlib.h/zconf.h + internal headers.
No configure step is needed -- the shipped zconf.h is portable. License: the zlib
License (permissive, BSD-style); see the notice at the end of zlib.h and README.