[jdk11u-dev] RFR: 8249019: clean up FileInstaller $test.src $cwd in vmTestbase_vm_compiler tests

[Goetz Lindenmaier]

This test cleanup is a clean backport and simplifies follow-up backports.

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Commit messages:
 - Backport c5ad1daa96010cf648a3a267782ee481c060be12

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/752/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=752&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8249019
  Stats: 269 lines in 163 files changed: 0 ins; 163 del; 106 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/752.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/752/head:pull/752

PR: https://git.openjdk.java.net/jdk11u-dev/pull/752