HBASE-1936 ClassLoader that loads from hdfs; useful adding filters to classpath without having to restart services

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1467789 13f79535-47bb-0310-9956-ffa450edef68
HBASE-1936 ClassLoader that loads from hdfs; useful adding filters to classpath without having to restart services - ADDENDUM

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1467793 13f79535-47bb-0310-9956-ffa450edef68