[jdk17u-dev] RFR: 8294840: langtools OptionalDependencyTest.java use File.pathSeparator

[Matthias Baesken]

8294840: langtools OptionalDependencyTest.java use File.pathSeparator

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Commit messages:
 - Backport f531dae4a0ffd2a5663cf4a4bde581d68fc728d5

Changes: https://git.openjdk.org/jdk17u-dev/pull/833/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=833&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294840
  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/833.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/833/head:pull/833

PR: https://git.openjdk.org/jdk17u-dev/pull/833