relax SVN archive

This is the data in test_suite/shared_data/frame_order/cam/free_rotor_missing_data. To simplify the
copying of data from test_suite/shared_data/frame_order/cam/free_rotor and then the deletion of
data, the missing.py script was created to automate the process. The generate_distribution.py
script and some of the files it creates were removed from the repository so it is clearer how the
data has been created.