RFR: 8256552: Let ReplayCompiles set UseDebuggerErgo

[Vladimir Ivanov]

On Wed, 18 Nov 2020 12:48:45 GMT, Nils Eliasson <neliasso at openjdk.org> wrote:

> When replaying compiles a lot of unnecessary threads are started. The new excellent UseDebuggerErgo flag is a perfect match for replay.

Looks good.

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Marked as reviewed by vlivanov (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1289