RFR: JDK-8202919: JDK-8202683 broke macosx build

[Erik Joelsson]

The macosx build fails with:

jib > /usr/bin/printf: illegal option -- s
jib > usage: printf format [arguments ...]
jib > Copy-java.base.gmk:123: recipe for target 
'/scratch/mesos/slaves/555f5737-a945-4eb0-8d30-afb1fc816afd-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/6b28d42d-8028-4658-a23d-8f6d3f314161/runs/f48124fc-fd2c-4db3-9cfe-4eddde371989/workspace/build/macosx-x64/support/modules_libs/java.base/jvm.cfg' 
failed

Adding -- first on the printf lines fixes this build error.

Bug: https://bugs.openjdk.java.net/browse/JDK-8202919

Webrev: http://cr.openjdk.java.net/~erikj/8202919/webrev.01/

/Erik