RFR: 8009744: build-infra: REGRESSION: Publisher was NOT set for some JDK files

[Tim Bell]

Erik:

> Please review this patch which moves the expansion of version 
> variables for RC_FLAGS from configure to spec.gmk. This makes it 
> possible to override these variables with custom values for OracleJDK.
>
> http://cr.openjdk.java.net/~erikj/8009744/webrev.root.01

Looks good to me.  Thanks-

Tim