[jdk11u-dev] RFR: 8287896: PropertiesTest.sh fail on msys2

[George Adams]

Applies cleanly (except for copyright header) backport of [JDK-8287896](https://bugs.openjdk.org/browse/JDK-8287896): PropertiesTest.sh fail on msys2

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Commit messages:
 - Backport f1dd559e20342b892d0c1ed0314e5bba451bc5d3

Changes: https://git.openjdk.org/jdk11u-dev/pull/1541/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1541&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8287896
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1541.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1541/head:pull/1541

PR: https://git.openjdk.org/jdk11u-dev/pull/1541