'''Backward compatibility between the Ruby version of CMC, PXE and the nodeHandler'''

1) The handler directory has a new cmc.rb file. Checkout the latest handler/cmc.rb

2) In nodeHandler.rb, 
    def run()
          change CMC::nodeAllOff() to CMC::nodeAllOffSoft()

    def shutdown()
          change CMC::nodeAllOff() to CMC::nodeAllOffSoft()

3) In experiment.rb,
    def Experiment.start()
          make changes to send a single CMC call to the entire set instead of sending 
          multiple CMC calls (once for each node). The existing code is in comments
          and the new code has been explicitly identified.

4) In node.rb, 
    def powerOn
       comment out CMC::nodeOn(x, y)
    end

    def powerOff
       change CMC::nodeOff to CMC::nodeOffSoft
    end

5) In nodeHandler/src/etc/nodehandler/grid.cfg set
     CMC_URL= "http://cmc:5012/cmc"

6) In nodeSet.rb,
     def pxeImage(image, imageName = nil)
         change the string that is assigned to @pxePrefix.The existing code has been commented out and 
         also comments indicate the new code added.
     end

7) In nodeSet.rb,
         the calls to the function setPxeEnv has been commented and an new function setPxeEnvMulti has  
         been implemented.