Ftw-catalogdoctor

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- Nothing changed yet.

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- Defer reindex until removal from indexes is done, introduce post-op. [deiferni]

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- Drop duplicate objects from Acquisition when fixing UID index. [deiferni]
- Implement reindexing objects when still traversable for orphaned rids. [deiferni]
- Check for shorter path rather than direct parent in surgery safeguard. [deiferni]
- Use extra rid removal surgery for new symptoms. [deiferni]

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- Initial implementation.