HardenedBSD/lib/libz/FREEBSD-upgrade
Xin LI e16f0839c6 Restructure libz, place vendor files in contrib/zlib like other third
party software, this provides more standarized import workflow and
makes future upgrades easier.

The following files are new with this commit:

	zconf.h.in
	zlib.map
	zlib.pc.in

They are not connected to build, but were kept in tree for reference
for future maintenance.

All our local trivial changes were applied to contrib/zlib, and the
contrib/zlib vendor source code is intended to 100% match lib/libz
before this commit.

MFC after:	2 weeks
2017-01-04 09:30:47 +00:00

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$FreeBSD$
Original distribution from http://zlib.net/. Currently, only trivial
changes were made to support build of libstand and to suppress certain
compiler warnings, we upstream our local changes whenever they would
benefit other consumers.
To Update:
1) Unpack vendor sources into a clean directory.
2) Import onto the vendor area.
3) Merge the vendor tree to contrib/zlib, which contains a stripped down
version of upstream source, resolve any conflicts.
4) Double check zconf.h, zlib.pc, and Symbol.map to make sure that we
have the required changes. Test universe and commit them.
delphij@FreeBSD.org