5) Create FreeSurfer directory tree using mksubjdirs
     (note: be sure to source your .fs_login file first)
mksubjdirs  <subject_name>
 Class Example:  (from within lc_play/ directory)
mksubjdirs  lc_avg
Volume
preprocessing
Segmentation
Tessellation
Inflation
Manual Editing
Re-inflation
Fix topology
Final Surface
Volume/Surface
postprocessing
Cutting &
Flattening