1. Running Accumulo with new VFS ClassLoader as SystemClassLoader

   a. Add accumulo/test/target/TestJar-Iterators.jar to HDFS directory
	hadoop fs -mkdir /iterators
	hadoop fs -put TestJar-Iterators.jar /iterators/.
   b. Add vfs-reloading-classloader-0.0.1-SNAPSHOT.jar to CLASSPATH
   c. Add "-Djava.system.class.loader=org.apache.accumulo.classloader.vfs.ReloadingVFSClassLoader" to JAVA_OPTS
   d. Add "-Dvfs.class.loader.classpath=hdfs://localhost:9000/iterators/TestJar-Iterators.jar" to JAVA_OPTS
   e. Add "-Dvfs.class.loader.debug=true" to JAVA_OPTS
   f. Create table , insert some test data
      createtable test
      insert a b c this_is_a_test
      scan
      setiter -class org.apache.accumulo.test.functional.ValueReversingIterator -scan -t test -name reverse -p 100