[8u-dev] Request for approval: backport 8152271: MemberNameTable doesn't purge stale entries

[Kevin Walls]

Hi,

I'd like to backport the following to 8u-dev.

8152271: MemberNameTable doesn't purge stale entries

https://bugs.openjdk.java.net/browse/JDK-8152271

An hg import from the 9 changeset:

http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/13b2c7ac95a5

...works and tests well in jprt and with a manual testcase that showed a 
gc slowdown before the fix.


Thanks
Kevin