Bugs in segmentation of VBM2 fixed

There was a bug in the longitudinal segmentation of VBM2, which caused a crash if you tried to segment more than two subjects.
Furthermore, the CSF images in cross-sectional and longitudinal segmentation were not masked which is neccessary for the HMRF approach. This resulted in classifying noisy regions outside the brain as CSF. Gray and white matter images were not affected.
It is recommended to update VBM2 to version 1.05 available at the download section.