Review 8-pool bugs

Team task to evaluate unresolved 8-pool bugs. We have 600+ bugs in the pool, of which many could be closed as already Fixed, Won't Fix, Cannot Reproduce, etc.

Subtasks created for individuals with assigned bugs.

Filter for unresolved 8-pool bugs: https://bugs.openjdk.java.net/issues/?filter=20880

Filter fo unresolve 8-pool bugs assigned to current user: https://bugs.openjdk.java.net/issues/?filter=20900