[jdk8u-dev] RFR: 8324632: Update Zlib Data Compression Library to Version 1.3.1

[fitzsim]

8315117: Update Zlib Data Compression Library to Version 1.3
8326351: Update the Zlib version in THIRD_PARTY_README to 1.3.1

Backport-of: 6aa721649d870354a79c3508343b14222e0edcfb

I am filing this pull request now mainly to register that I am working on this backport.  Some of the sanity checks have already failed on package download issues; I will try re-running them and otherwise investigating how to fix them.

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Commit messages:
 - 8324632: Update Zlib Data Compression Library to Version 1.3.1

Changes: https://git.openjdk.org/jdk8u-dev/pull/511/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=511&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324632
  Stats: 2220 lines in 26 files changed: 609 ins; 1036 del; 575 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/511.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/511/head:pull/511

PR: https://git.openjdk.org/jdk8u-dev/pull/511