[jdk11u-dev] RFR: 8293345: SunPKCS11 provider checks on PKCS11 Mechanism are problematic

[Antonio Vieiro]

Clean backport of [JDK-8293345](https://bugs.openjdk.org/browse/JDK-8293345) (but a copyright line, that is) for parity with 11.0.27-oracle.

Tier 1 tests pass in Linux.

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Commit messages:
 - Backport 6f16a44784fbaeedfe4ccd6c4e7fb5280b329c2b

Changes: https://git.openjdk.org/jdk11u-dev/pull/2983/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2983&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293345
  Stats: 51 lines in 2 files changed: 25 ins; 25 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2983.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2983/head:pull/2983

PR: https://git.openjdk.org/jdk11u-dev/pull/2983