Log Message:
Add oracle-jdk8 to the accepted list.

NB: I'm not game enough to do it in the freeze, but it looks like the
JVM version detection patching could be removed - it appears no longer
necessary now that Pkgsrc passes in the correct RXTX_PATH and JHOME_PATH
itself.  At any rate, adding version 8 is not required for the oracle-jdk8
build to complete smoothly.