Reviewed-by: dholmes

Summary: Updated starsWith/endsWith to be consistent with default file system
Reviewed-by: alanb

7014948: (zipfs) ZipFileSystem.newFileSystem(Path...) should not throw FileSystemAlreadyExistsException
7015139: (zipfs) ZipPath.delete() should throw DirectoryNotEmptyException when handling "real, non-empty" dir
Summary: zip filesystem provider update
Reviewed-by: alanb

7009092: (zipfs) ZipPath.isSameFile() should always return true if this Path and the given Path are equal.
7009085: (zipfs) ZipPath.normalize("/./.") returns null.
7009102: (zipfs) ZipPath.toRealPath() should always return absolute path.
Summary: zip filesystem provider update
Reviewed-by: alanb

Summary: The first drop of the zip filesystem provider, as a separate demo
Reviewed-by: alanb