Log Message:
* Use buildlink2.
* Build the kaffe package with PREFIX=${LOCALBASE}/java/kaffe and adjust
  the PLIST accordingly.  This is to make the Java VM packages consistently
  return JAVA_HOME from `pkg_info -qp <jvm-pkg>'.
* License file was wrongly being installed as ${PREFIX}/share.
* Separate out last half of DESCR into a more appropriate MESSAGE file.