creation of cluster corrected images fails with long group names

[madhyastha]

Group names are truncated to 12 characters in output files by some step in the software pipeline. These names then no longer match the expected names for cluster correction and generation of cluster-corrected images fails.

See /mnt/panuc/udallp2/SVCgroupanal/sai_seed_cluster_singlegroup/hcOnNoOutliers/clustcorr