RFR(XXS) : register closed @requires property setter

[Igor Ignatyev]

Hi all,

could you please review the changeset which registers closed vm property setter (for @requires expressions)?
this setter is register as optional, so test execution won’t fail if the file doesn’t exist. 

webrev.top : http://cr.openjdk.java.net/~iignatyev/8170228/top/webrev.00/
webrev.hotspot : http://cr.openjdk.java.net/~iignatyev/8170228/hotspot/webrev.00/
JBS : https://bugs.openjdk.java.net/browse/JDK-8170228

Thanks,
— Igor