Review Request: 7141246 build-infra merge: Introduce new JVM_VARIANT* to control which kind of jvm gets built

[Erik Joelsson]

http://cr.openjdk.java.net/~erikj/7141246/webrev.02

New webrev posted. Removed all renames of KERNEL->MINIMAL. We would 
still like to keep the name of the new JVM_VARIANT variable if possible.

/Erik
> You seem to have included the MINIMAL VM changes in here. Those changes
> have not been pushed to the mainline and are not yet to be pushed. If
> you want to push these build-infra changes you will need to factor out
> the MINIMAL VM stuff - else wait.
>
> David