RFR: 8330542: Add two sample configuration files

[Joe Wang]

Add two sample configuration files:

  jaxp-strict.properties: used to set strict configuration, stricter than jaxp.properties in previous versions such as JDK 22

  jaxp-compat.properties: used to regain compatibility from any more restricted configuration than previous versions such as JDK 22

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Commit messages:
 - fix whitespace
 - 8330542: Add two sample configuration files

Changes: https://git.openjdk.org/jdk/pull/18831/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18831&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330542
  Stats: 229 lines in 2 files changed: 229 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18831.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18831/head:pull/18831

PR: https://git.openjdk.org/jdk/pull/18831