[jdk15u-dev] RFR: 8245527: LDAP Channel Binding support for Java GSS/Kerberos

[Yuri Nesterenko]

Clean backport to 15u for parity with major releases. Ldap-related tests all pass. CSR JDK-8290061 approved.

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Commit messages:
 - Backport cfa3f7493149170f2b23a516bc95110dab43fd06

Changes: https://git.openjdk.org/jdk15u-dev/pull/228/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk15u-dev&pr=228&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8245527
  Stats: 543 lines in 10 files changed: 531 ins; 0 del; 12 mod
  Patch: https://git.openjdk.org/jdk15u-dev/pull/228.diff
  Fetch: git fetch https://git.openjdk.org/jdk15u-dev pull/228/head:pull/228

PR: https://git.openjdk.org/jdk15u-dev/pull/228