RFR 8159635: JShell API: Set compiler options

[Robert Field]

Please review --

Bug:
     https://bugs.openjdk.java.net/browse/JDK-8159635

Webrev:
     http://cr.openjdk.java.net/~rfield/8159635v0.webrev/

Spec:
     http://cr.openjdk.java.net/~rfield/jshell_8159635/

     Specifically:
http://cr.openjdk.java.net/~rfield/jshell_8159635/jdk/jshell/JShell.Builder.html#compilerOptions-java.lang.String...-

Thanks,
Robert