RFR: 8359395: XML signature generation does not support user provided SecureRandom [v3]

[Weijun Wang]

> New `XMLSignContext` property to allow user-specific `SecureRandom` for XML signature generation.

Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:

  update copyright years

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25802/files
  - new: https://git.openjdk.org/jdk/pull/25802/files/fcd50edd..56620819

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25802&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25802&range=01-02

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25802.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25802/head:pull/25802

PR: https://git.openjdk.org/jdk/pull/25802