Mnt/update fsl package

Fixes to update_fsl_package script, and updates to unit tests to get them running

tests/feedsRun

@@ -4,5 +4,4 @@ set -e
 
 fslpython ./test_create_remove_wrapper.py ${FSLDIR}
 fslpython ./test_make_install.py
-fslpython ./test_create_remove_wrapper.py
 fslpython ./test_update_fsl_package.py