hg: jdk10/jdk10: 8173383: Update JDK build to use -source and -target 10

[joe.darcy at oracle.com]

Changeset: 80f2e54e3008
Author:    darcy
Date:      2017-01-31 17:35 -0800
URL:       http://hg.openjdk.java.net/jdk10/jdk10/rev/80f2e54e3008

8173383: Update JDK build to use -source and -target 10
Reviewed-by: dholmes

! make/common/SetupJavaCompilers.gmk