RFR: 8330542: Add jaxp-strict.properties in preparation for a secure by default configuration [v7]

[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

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

  The JDK provides two configuration files instead of three. Updated jaxp-strict.properties to reflect the change. Removed jaxp-compat. Updated jaxp.properties with properties the same as in jaxp-strict, setting to default values.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18831/files
  - new: https://git.openjdk.org/jdk/pull/18831/files/af351a4d..f3af4ae9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18831&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18831&range=05-06

  Stats: 191 lines in 6 files changed: 8 ins; 157 del; 26 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