8202076: test/jdk/java/io/File/WinSpecialFiles.java on windows with VS2017

[Brian Burkhalter]

https://bugs.openjdk.java.net/browse/JDK-8202076
http://cr.openjdk.java.net/~bpb/8202076/webrev.00/

If all else fails, obtain the file length via the FindFirstFileW function [1].

Thanks,

Brian

[1] 
https://msdn.microsoft.com/en-us/library/windows/desktop/aa364418(v=vs.85).aspx