RFR: JDK-8291974 PrivateCredentialPermission should not use local variable to enable debugging

[Weijun Wang]

On Wed, 7 Sep 2022 19:49:53 GMT, Mark Powers <mpowers at openjdk.org> wrote:

> https://bugs.openjdk.org/browse/JDK-8291974

In the problem section part of the CSR, add a sentence on what's wrong with the field.

In the spec section, please only keep the removal of the `testing` field. All others are implementation changes and not part of spec.

In the compatibility reason, add a sentence on why removing the field has no actual effect on serialization and deserialization.

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PR: https://git.openjdk.org/jdk/pull/10206