#14 DNR support for HOSTS file

[Andrew Roughan]

Email from Kelvin:
I've got some half-written /etc/host type support that
I'd like to add (my intranet doesn't have a DNS server :)

Comments from me:
I would like to see some parameters in the CDEV to
support this file. e.g. tickbox for turning usage on/off
and pathname to identify the file.