[aarch64-port-dev ] RFR: Backports to aarch64/jdk8u

[Yangfei (Felix)]

> Hmm. Some of these are not really suitable for back-porting.  Any bugs that
> don't
> affect users unless they enter outlandish -XX: arguments won't be backported.
> 
> 8209414 should be backported. Is there anything else?

Well, I think 8209414 is the only one in this list with this 8u backporting rule. 

Updated webrev which only includes 8209414: http://cr.openjdk.java.net/~fyang/8209414-backport/webrev.00/ 

Jtreg tested with a 8u-aarch64 fastdebug buid.  OK to push?