 - Add further vm object locking to vm_object_deallocate(), specifically,    for accessing a vm object's shadows.
 - Add further vm object locking to vm_object_deallocate(), specifically,
   for accessing a vm object's shadows.

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