RFR(XS) [JDK9] Fix build issues on Windows

[Roman Kennke]

Am 25.07.2017 um 21:48 schrieb Zhengyu Gu:
> Backport JDK10 to JDK9, the same issues on JDK9
>
> Webrev: http://cr.openjdk.java.net/~zgu/shenandoah/jdk9-build/webrev.00/
>
>
> Thanks,
>
> -Zhengyu
>
Yes.

This doesn't require separate review if exact same patch has been
approved for jdk10 :-)

Roman