git: openjdk/jdk21u-dev: master: 2 new changesets

[Goetz Lindenmaier]

Changeset: a6c2398f
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2023-12-21 11:18:24 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/a6c2398ff9ef2f046b21b4026838c5624f2c13d6

8317218: G1: Make TestG1HeapRegionSize use createTestJvm

Backport-of: 75b37e6d7ec285f1a954f9d5b16bf9e6b642f2fc

! test/hotspot/jtreg/gc/arguments/TestG1HeapRegionSize.java

Changeset: 840724ba
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2023-12-21 11:20:27 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/840724babc6cc594456b5d1b3ae51d4a5187b27d

8317188: G1: Make  TestG1ConcRefinementThreads use createTestJvm

Backport-of: a949824e98a8872645f292c9cc9ed2fe1cccadce

! test/hotspot/jtreg/gc/arguments/TestG1ConcRefinementThreads.java