RFR: 8255255: Update Apache Santuario (XML Signature) to version 2.2.0 [v5]

[Weijun Wang]

> This is a multi-commits PR that upgrades xmldsig to be equivalent to Santuario 2.2.0.
> 
> The first step is an auto-import. The JDK implementation is removed first and Santuario code are imported. Some unrelated files (Ex: encryption) are removed, and package names are renamed to be internal. There are also some bulk changes on company name, comment style, and white spaces.
> 
> Next steps are patches applied by JDK. Some are old patches before the last import. Some are new.
> 
> Several tests need to be updated because of internal method signature changes.

Weijun Wang has updated the pull request with a new target base due to a merge or a rebase.

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Changes: https://git.openjdk.java.net/jdk/pull/1206/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1206&range=04
  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1206.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1206/head:pull/1206

PR: https://git.openjdk.java.net/jdk/pull/1206