unbreak nfs client for threadsafe lwip
unbreak nfs client for threadsafe lwip

This function "wait_for_condition_fair()" looks dubious at best, but
I'm just trying to make stuff work. Don't blame me for touching it
last!

utsav2601/cmpe295A,utsav2601/cmpe295A,kishoredbn/barrelfish,mslovy/barrelfish,linusyang/barrelfish,BarrelfishOS/barrelfish,linusyang/barrelfish,mslovy/barrelfish,linusyang/barrelfish,kishoredbn/barrelfish,kishoredbn/barrelfish,8l/barrelfish,8l/barrelfish,8l/barrelfish,kishoredbn/barrelfish,utsav2601/cmpe295A,utsav2601/cmpe295A,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,linusyang/barrelfish,mslovy/barrelfish,BarrelfishOS/barrelfish,mslovy/barrelfish,8l/barrelfish,BarrelfishOS/barrelfish,utsav2601/cmpe295A,BarrelfishOS/barrelfish,mslovy/barrelfish,BarrelfishOS/barrelfish,8l/barrelfish,BarrelfishOS/barrelfish,8l/barrelfish,linusyang/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,utsav2601/cmpe295A,mslovy/barrelfish