- Lock the VM when initializing the vmspace for proc0. - Don't bother releasing Giant while doing a lookup on the vm_map of   initproc while starting up init.  We have to grab it again right after   the lookup anyways.
- Lock the VM when initializing the vmspace for proc0.
- Don't bother releasing Giant while doing a lookup on the vm_map of
  initproc while starting up init.  We have to grab it again right after
  the lookup anyways.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase