Revert accidentially checked in shm changed and apply patch from Zeus properly with hg import.
Revert accidentially checked in shm changed and apply patch
from Zeus properly with hg import.

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