Fix a test that was using an outdated config setting
Add JavaAPICompletenessChecker.

This is used to find methods in the Scala API that
need to be ported to the Java API.  To use it:

  ./run spark.tools.JavaAPICompletenessChecker
Conflicts:
	project/SparkBuild.scala
	run
	run2.cmd
Remove annotation code that broke build.
Merge branch 'master' of github.com:mesos/spark