| Disk ARchive 2.6.11 Full featured and portable backup and archiving tool

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- unset_external_catalogue() : libdar::archive_options_read
- unstack() : libdar::infinint
- update_absent_with() : libdar::catalogue
- update_destroyed_with() : libdar::catalogue
- user_interaction() : libdar5::user_interaction
- user_interaction_callback() : libdar5::user_interaction_callback , libdar::user_interaction_callback