- eliminate getVMwareConfig_legacy
  + incorporate default setting for guestOS
    into XMLVMachineData
  + drop all other mappings for guestOS, this is
    the user's responsibility
- fix VMWare NIC setup bug
  + previously the generated config file (.vmx) did not
    contain information about the specified MAC address.
    The MAC was always set to "generated" ignoring the
    user specified data.