Changes for April 2016 CPU release (8u91/8u92) synced into FX 8u-dev and 9-dev

[Kevin Rushforth]

I have synced the OpenJFX changes from the just-released April 2016 CPU 
release (8u91/8u92) into 8u and into 9.

Here is a webrev of the FX 8u92 changes for those who are interested in 
the changes, but don't want to wade through the 52 separate changesets I 
just pushed (most of which are tag or merge changesets).

http://cr.openjdk.java.net/~kcr/8u92-8u-sync/webrev/

The webrev for 9 is almost identical, but here it is if anyone is 
interested:

http://cr.openjdk.java.net/~kcr/9-cpu-1602-sync/webrev/

-- Kevin