[jdk17u-dev] RFR: 8291911: java/io/File/GetXSpace.java fails with "53687091200 != 161051996160"

[Goetz Lindenmaier]

I backport this for parity with 17.0.*-oracle.
This is a chain of 4 fixes to that test. I backport them as one piece as parts always cause errors here and there.

https://bugs.openjdk.org/browse/JDK-8291911 

I had to resolve because of the double ;;.
Also it is not problemlisted in 17.

https://bugs.openjdk.org/browse/JDK-8298619

I had to resolve JtregNativeJdk.gmk due to context.

https://bugs.openjdk.org/browse/JDK-8305646
https://bugs.openjdk.org/browse/JDK-8309216
both clean.

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Commit messages:
 - Backport 9188142698d8fdcee43c0b0519fde5c63b0010f8
 - Backport a3137c750f37d8fb03fd93f12e699df790adb327
 - Backport 3ef834fc6fc245accffc41da714358fc82f22657
 - Resolved
 - Backport 749335d34ac570760279ac81308d5d323aba4067

Changes: https://git.openjdk.org/jdk17u-dev/pull/1912/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1912&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291911
  Stats: 321 lines in 3 files changed: 243 ins; 35 del; 43 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1912.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1912/head:pull/1912

PR: https://git.openjdk.org/jdk17u-dev/pull/1912