Copy the files in the 3 different wfu_* folders over the files in the 
existing installation. Additionally, the following files can be deleted:

wfu_pickatlas/wfu_roi.m
wfu_results/wfu_ROI.m
wfu_results/wfu_VOI.m
wfu_results/wfu_spm_hread.m
wfu_results/wfu_spm_invCcdf.m
wfu_results/wfu_spm_P.m
wfu_results/wfu_spm_P_RF2.m
wfu_results/wfu_spm_P_RF5.m

Not removing these files should have no impact on running the
WFU_PickAtlas.
