RFR(XXS) : 8172557 : quarantine ctw/JarDirTest

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev/8172557/webrev.00/
> 2 lines changed: 2 ins; 0 del; 0 mod;

Hi all,

could you please review this small fix which puts testlibrary_tests/ctw/JarDirTest.java into quarantine on windows till 8172457 is fixed?

Thanks,
— Igor

testing: testlibrary_tests/ctw/ on linux(4 tests executed and passed) and windows(3 tests executed and passed)
webrev: http://cr.openjdk.java.net/~iignatyev/8172557/webrev.00/
JBS: https://bugs.openjdk.java.net/browse/JDK-8172557
8172457: https://bugs.openjdk.java.net/browse/JDK-8172457