Upgrade to 0.19.0

[Dru Jensen]

I am upgrading to 0.19.0.  Do I still need these settings in hadoop- 
site.xml?

  <property>
    <name>dfs.datanode.max.xcievers</name>
    <value>1024</value>
  </property>
  <property>
    <name>dfs.datanode.socket.write.timeout</name>
    <value>0</value>
  </property>
  <property>
    <name>mapred.child.java.opts</name>
    <value>-Xmx1024m</value>
  </property>
Thanks,
Dru