RFR: 8253569: javax.xml.catalog.Catalog.matchURI() implementation should reset state variables [v2]

[Naoto Sato]

On Wed, 30 Mar 2022 00:46:49 GMT, Joe Wang <joehw at openjdk.org> wrote:

>> Resets state of a Catalog instance on each matching call so that it can be reused. Adjusts CatalogResolver's resolve routine so that it continues to observes the PREFER feature in a resolution process. Without the adjustment, PreferFeatureTest would fail.
>> 
>> Mach5 XML tests passed: https://mach5.us.oracle.com/mdash/jobs/huizwang-open-20220329-0148-30563542
>
> Joe Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove variable, check instance instead.

Marked as reviewed by naoto (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8018