on removed symbols. Renaming is technically correct and ensures that users
cannot install packages which are potentially incompatible with library
changes... but it would forcibly uninstall a lot of packages for people, which
they won't expect. We would prefer some apps don't run properly and be told
about those problems (which we can deal with on a per-case basis).
Former-commit-id: 36db6a9fa1e7eb747931cf5d7b8f97ee1c0cf6cf
