RFR: 8320918: Fix errors in the built-in Catalog implementation [v3]

[Joe Wang]

> Fix errors in the built-in Catalog implementation, specifically:
>     -- incorrect case in the property name as defined in the CSR (https://bugs.openjdk.org/browse/JDK-8306056)
>     -- tests needed to be updated accordingly
>     -- jaxp.properties updated with documentation for the new properties
>     
> Tests: passed after the update.

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

  the example now uses RESOLVE instead of FILES.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/16862/files
  - new: https://git.openjdk.org/jdk/pull/16862/files/af0c7438..de3b7c24

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16862&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16862&range=01-02

  Stats: 4 lines in 2 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/16862.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16862/head:pull/16862

PR: https://git.openjdk.org/jdk/pull/16862