Mnt/createwrapper

Paul McCarthyrequested to merge
mnt/createwrapper into master

Fixes a couple of issues with the createFSLWrapper script:

  • Call /usr/bin/stat instead of stat on macOS, as some systems may have a non-standard stat first on their $PATH
  • Adjust the regular expression used for python script detection, as it was not detecting versioned python executables, e.g. python3.10.

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