hg: jdk9/dev/jdk: 8039865: Add fallthrough lint warning to build of jdk repository

[jason.uh at oracle.com]

Changeset: b561412cd668
Author:    darcy
Date:      2014-05-30 16:45 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/b561412cd668

8039865: Add fallthrough lint warning to build of jdk repository
Reviewed-by: erikj

! make/Setup.gmk