[jdk15u-dev] Integrated: 8255255: Update Apache Santuario (XML Signature) to version 2.2.1

[Yuri Nesterenko]

The massive update patch applies cleanly to 15u. Regression tests do pass; more serious testing with real-life applications will be done in due time after integration.

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Commit messages:
 - Backport cb742f956078f420be328d7899fcba768939020f

Changes: https://git.openjdk.java.net/jdk15u-dev/pull/162/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=162&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255255
  Stats: 7972 lines in 186 files changed: 2632 ins; 3944 del; 1396 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/162.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/162/head:pull/162

PR: https://git.openjdk.java.net/jdk15u-dev/pull/162