Miscellaneous small changes:
1. Fixed issue #54 with atlases being matched to labels improperly. Now uses fnmatch instead of re.search to match exact strings.
2. Default registration and masking methods changed back to minctracc
3. HierarchicalMinctracc now calls LSQ12 module instead of independently calling 2 -lsq12 stages.
4. Updated default directory in various places: LSQ12 module now puts transforms in tmp; final stage of HM puts xfms in transforms.
5. Updated default mincANTS params: SyN[0.1], Gauss[2,1], 100X100X100X150
6. Deleted ChainAlignLSQ6 and all calls. This function was never fully tested or implemented and we will ultimately have LSQ6 if we need to use this functionality.