Subo lo que Adri hizo ayer.

 On branch issue_38
 Changes to be committed:

	modified:   src/CygnusCloud/virtualMachineServer/networking/packets.py
	modified:   src/CygnusCloud/virtualMachineServer/reactor/vmServerReactor.py
	modified:   src/CygnusCloud/virtualMachineServer/threads/compressionThread.py
	modified:   src/CygnusCloud/virtualMachineServer/threads/fileTransferThread.py