Corrijo el issue #24. También aprovecho para reorganizar el código que
crea procesos, haciéndolo más limpio.

 On branch vm_server_cleanup
 Changes to be committed:

	deleted:    ccutils/commands.py
	modified:   ccutils/multithreadingList.py
	new file:   ccutils/processes/__init__.py
	new file:   ccutils/processes/backgroundPollingThread.py
	new file:   ccutils/processes/childProcessManager.py
	modified:   testing/virtualMachineServerTester.py
	modified:   virtualMachineServer/virtualNetwork/virtualNetworkManager.py
	modified:   virtualMachineServer/vmServer.py