[crac] RFR: 8353241: [CRaC] Support ZGC

Mon Mar 31 08:25:52 UTC 2025

During my tests with https://github.com/CRaC/example-spring-boot I could not get the image size as low as with G1, but the presented changes improve the image footprint. As as anecdotal data, the image is 177 MB with G1 while 215 MB with ZGC (fastdebug build, `-Xmx1G`).

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Commit messages:
 - 8353241: CRaC ZGC support

Changes: https://git.openjdk.org/crac/pull/219/files
  Webrev: https://webrevs.openjdk.org/?repo=crac&pr=219&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353241
  Stats: 103 lines in 10 files changed: 84 ins; 7 del; 12 mod
  Patch: https://git.openjdk.org/crac/pull/219.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/219/head:pull/219

PR: https://git.openjdk.org/crac/pull/219