RFR(XXS) : 8170226 : Implement setting jtreg @requires property vm.jvmci

[Igor Ignatyev]

Hi all,

could you please review this tiny changeset which adds new property for jtreg @requires expression — vm.jvmci?

this property will be used to run jvmci tests only on builds which support it, the tests will be updated by JDK-8170227.
 
webrev.top: http://cr.openjdk.java.net/~iignatyev/8170226/top/webrev.00/
webrev.hs: http://cr.openjdk.java.net/~iignatyev/8170226/hotspot/webrev.00/
JDK-8170226: https://bugs.openjdk.java.net/browse/JDK-8170226

JDK-8170227: https://bugs.openjdk.java.net/browse/JDK-8170227

Thanks,
— Igor