RFR: 8330542: Add jaxp-strict.properties in preparation for a secure by default configuration [v9]

[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
> 
> Updated 5/16/2024
> 
> Design change:
> The design is changed to include in the JDK two configuration files that are the default jaxp.properties and jaxp-strict.properties, instead of three, dropping jaxp-compat.properties.

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

  modernize make copy; update module summary and jaxp-strict.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18831/files
  - new: https://git.openjdk.org/jdk/pull/18831/files/cf4df792..2ee2c7ca

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18831&range=08
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18831&range=07-08

  Stats: 24 lines in 3 files changed: 1 ins; 12 del; 11 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