RFR: JDK-8228460: bootstrap class path not set in conjunction with -source 11

[Jan Lahoda]

Hi,

When running with --source which is less than the current default source 
and -bootclasspath is not specified, a warning about not specified 
-bootclasspath is printed. But that is not really appropriate for 
-source 9+, because it should a) mention system module path, rather than 
-bootclasspath; b) the option to check should be --system, not 
-bootclasspath. The proposed patch is trying to fix that.

JBS: https://bugs.openjdk.java.net/browse/JDK-8228460
Webrev: http://cr.openjdk.java.net/~jlahoda/8228460/webrev.00/

How does this look?

Thanks,
     Jan