[8u20] RFR (M): 8035828: Turn on @Stable support in VM

[Vladimir Ivanov]

Hello,

I’d like to backport 8035828 to 8u20.

It turns on by default a feature added in 8. JSR292 implementation uses 
@Stable and upcoming improvements will rely on it to produce performant 
code. It was tested in 9 for 3 weeks already.

https://bugs.openjdk.java.net/browse/JDK-8035828
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/aed8e1fe80eb
http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2014-February/013591.html

Thanks!

Best regards,
Vladimir Ivanov