RFR: 8345060: Remove Security Manager dependencies from java.security.KeyStore and Identity APIs and implementations

Tue Nov 26 21:10:51 UTC 2024

Now that JEP 486 has been integrated, `java.security.KeyStore` and `Identity` API and impl dependencies on `System.getSecurityManager`, `AccessController.doPrivileged` and `AccessControlContext` can be removed.

Most of the changes are straightforward, although some of the refactoring in `KeyStore` was a bit complex due to having to extract the code from the `PrivilegedAction` subclasses.

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Commit messages:
 - AppleProvider and test updates.
 - Initial cleanup.

Changes: https://git.openjdk.org/jdk/pull/22401/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22401&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345060
  Stats: 255 lines in 11 files changed: 25 ins; 161 del; 69 mod
  Patch: https://git.openjdk.org/jdk/pull/22401.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22401/head:pull/22401

PR: https://git.openjdk.org/jdk/pull/22401