Fix sqlmigrate's output for parameters
Change FKs when what they point to changes
Better default name for migrations we can't give nice names to
Fix altering of SERIAL columns and InnoDB being picky about FK changes
Fixed #21510 -- Readded search reset link in changelist search bar

Thanks moritz.pfeiffer at alp-phone.ch for the report and
Tim Graham for the initial patch.
Fixed #21563 -- Single related object descriptors should work with `hasattr`.

Thanks to Aymeric Augustin for the review and Trac alias monkut for the report.
Fixed #21462 -- Made `assertNumQueries` print executed queries on failure.
Brought comments in sync with the code in BaseAppCache.
loaders
testing