sherman [Wed, 25 May 2016 13:53:03 -0700] rev 38568
8147539: (zipfs) ZipPath should throw ProviderMismatchException when invoking register()
8153248: (zipfs) ZipPath#getFileName( ) returns inconsistent result
8146754: (zipfs) ZipPath.relativize() returns wrong result for path ending with slash /
8139956: (zipfs) ZipPath does not produce correct empty path on relativize()
Reviewed-by: alanb, shurailine