RFR(XS) : 8172457: JarDirTest.java fails after recent change

[Igor Ignatyev]

Hi all,

Could you please review this small fix?

The test passes an asterisk symbol to a new spawn jvm process via ProcessTools. On windows, an asterisk is expand to files in a directory, but the test expects that the spawn jvm gets the symbol as is.
The problem is fixed by escaping asterisk symbol on windows.

JBS: https://bugs.openjdk.java.net/browse/JDK-8172457
Webrev: http://cr.openjdk.java.net/~iignatyev/8172457/webrev.01
Testing: affected tests on windows and non windows platform

Thanks,
— Igor