RFR: 8245788: EmptyFolderPackageTest fails on Windows 10

[Alexander Matveev]

Please review the jpackage fix for bug [1] at [2].

To unpack msi we using /a argument which is not exactly an installation. 
In this mode (Administrative installation) msi will extract files and 
also creates .msi installer to install these files. For some reason 
empty folders are not created during extraction, but they will be 
created after installing administrative installation. So, I think issue 
is not with jpackage, but instead we cannot verify empty folder using 
this approach and thus check for empty folder was disabled if msi is 
unpacked.

[1] https://bugs.openjdk.java.net/browse/JDK-8245788
[2] http://cr.openjdk.java.net/~almatvee/8245788/webrev.00/

Thanks,
Alexander