Enabling JFR support in Java WebStart

A request from the field: is it possible to use JFR in the context of an @ applet/JNLP?
Trying it currently leads to failure.

More precisely, it has been found that the only properties specified in the JNLP file that are effectively passed to the client JVM are the supported options as advertised in:
http://docs.oracle.com/javase/8/docs/technotes/guides/javaws/developersguide/syntax.html#resources
All other options are silently dropped. These dropped options include the JFR specific options.

This enhancement is about adding support for the JFR options (and thus introduce support for JFR) in applet/JNLP.
This includes but is not limited to:
-XX:+UnlockCommercialFeatures
-XX:+FlightRecorder
-XX:StartFlightRecording=...
-XX:FlightRecorderOptions=...