RFR 8220700: jlink generated launcher script needs quoting to avoid parameter expansion

[sundararajan.athijegannathan at oracle.com]

Please review.

Bug: https://bugs.openjdk.java.net/browse/JDK-8182555

Webrev: http://cr.openjdk.java.net/~sundar/8220700/webrev.00/

Thanks,

-Sundar