Expand --odt to --output-data-type
Expand --odt to --output-data-type

* Also add alias short name -u
* Also expand variable names e.g. odt to outputDataType

stnava/ANTs,stnava/ANTs,stnava/ANTs,stnava/ANTs,stnava/ANTs,stnava/ANTs,stnava/ANTs