RFR: JDK-8153768 Miscellaneous changes imported from jsr166 CVS 2016-05

[Chris Hegarty]

> On 23 May 2016, at 21:32, Martin Buchholz <martinrb at google.com> wrote:
> 
> JSR166 CVS has some unfinished work in progress, but enough minor
> changes have accumulated that we should integrate into openjdk9:
> 
> http://cr.openjdk.java.net/~martin/webrevs/openjdk9/jsr166-jdk9-integration/miscellaneous/
> https://bugs.openjdk.java.net/browse/JDK-8153768

This looks fine Martin.

-Chris.