[jdk13u-dev] RFR: 8255255: Update Apache Santuario (XML Signature) to version 2.2.1

[Yuri Nesterenko]

The massive update patch applies cleanly to 13u after prerequisites added. Regression tests do pass; more serious testing with real-life applications will be done in due time after integration.

-------------

Commit messages:
 - Backport cb742f956078f420be328d7899fcba768939020f

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/319/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=319&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255255
  Stats: 7971 lines in 186 files changed: 2632 ins; 3944 del; 1395 mod
  Patch: https://git.openjdk.java.net/jdk13u-dev/pull/319.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/319/head:pull/319

PR: https://git.openjdk.java.net/jdk13u-dev/pull/319