Add simple support for setting up networking

Does not really work, hangs.

We really need to set up the ldscripts for gathering together
stuff the *link() functions.

Crash your kernel!
bind -a '#I' /net
bind -a '#l0' /net
cat /9/net/ipifc/clone
myecho /9/net/ipifc/0/ctl 'bind ether /net/ether0'

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>