Handle the case of an mtime not being stored in the database.
Copy out part of copy_cmc_input for collecting paths.
Fix bug with cmc_input_fpaths.
Fix signature of cmc_input_fpaths.
Restore dict parameter to cmc_input_fpaths.
Return actu fpaths.
Do not delete files if orig_fpaths was empty for a key.
Fix adding actuators to cmc input.