[11][13] RFR: Request to backport October 2019 CPU changes

[Kevin Rushforth]

Hi Johan,

I request approval to backport the changes from the just-released April 
2019 CPU to 11-dev and 13-dev.

https://cr.openjdk.java.net/~kcr/cpu-1910-sync/11-dev/webrev/
https://cr.openjdk.java.net/~kcr/cpu-1910-sync/13-dev/webrev/

Each is a straight backport (patch applies cleanly) of the one FX fix 
that went into the October CPU.

Thanks.

-- Kevin