hg: jdk/sandbox: 8235959: Update --release 14 symbol information up to JDK 14 b31

[chris.hegarty at oracle.com]

Changeset: ef7d53b4fccd
Author:    darcy
Date:      2020-01-15 15:11 -0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/ef7d53b4fccd

8235959: Update --release 14 symbol information up to JDK 14 b31
Reviewed-by: jjg

! make/data/symbols/java.base-E.sym.txt
+ make/data/symbols/jdk.incubator.foreign-E.sym.txt
! make/data/symbols/symbols