RFR: 8276824: refactor Thread::is_JavaThread_protected

[Robbin Ehn]

On Tue, 9 Nov 2021 15:07:58 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

> Refactor `Thread::is_JavaThread_protected(const JavaThread* p, bool checkTLHOnly)`
> into: `bool Thread::is_JavaThread_protected(const JavaThread* p)`
> and: `Thread::is_JavaThread_protected_by_TLH(const JavaThread* p)`.
> Also change callers that passed `checkTLHOnly == true` into calls to
> `Thread::is_JavaThread_protected_by_TLH(const JavaThread* p)`.
> 
> This refactoring is being tested with Mach5 Tier[1-3] (in process).
> 
> In the "Files changed" view, enable "Settings -> Hide whitespace" for an easier review.

Marked as reviewed by rehn (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/6315