[11u] RFR: 8229887: (zipfs) zip file corruption when replacing an existing STORED entry

[Langer, Christoph]

Hi,

may I please get a review for the backport of this item to jdk11 updates:
Bug: https://bugs.openjdk.java.net/browse/JDK-8229887
Original Change: https://hg.openjdk.java.net/jdk/jdk/rev/abf6ee4c477c
Webrev: http://cr.openjdk.java.net/~clanger/webrevs/8229887.11u.0/

The original patch applies cleanly but the method java.nio.file.FileSystems::newFileSystem(Path path) that is used in the test was only introduced in JDK13. So I have to fallback to java.nio.file.FileSystems:: newFileSystem(Path path, ClassLoader loader) at these places (lines 123, 163 and 195 of UpdateEntryTest). With this modification, the test passes.

Thanks
Christoph

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