Oops..  Re-added linux_types.h at bas imagezip level.  I didn't realize that it was used outside the NTFS code.  imagezip builds correctly once again.
Oops..  Re-added linux_types.h at bas imagezip level.  I didn't realize that
it was used outside the NTFS code.  imagezip builds correctly once again.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome