Merge pull request cockroachdb#58720 from bdarnell/skippy-20.2

Merge pull request cockroachdb#58876 from bdarnell/skippy-19.2

*: Update gogoproto

Merge pull request cockroachdb#55058 from ajwerner/backport20.1-54876

release-20.1: sql: wait for canceled mutations to be at the head of the queue for reverse

Merge pull request cockroachdb#57677 from ajwerner/backport20.2-57648

release-20.2: sql: add force flag overloads to crdb_internal.unsafe_.* builtins

backupccl: introduce presplit_by_range cluster setting

This commit introduces a cluster setting that controls if backup will
try to presplit the spans that it imports into range-sized chunks to
hand out to its workers. This is a short-term fix intended to by-pass
reading meta2, which might be stuck.

Release note: None

Merge cockroachdb#57355

57355: kv/concurrency: bump goroutine stall delay r=nvanbenschoten a=nvanbenschoten

Fixes cockroachdb#57273.

This commit bumps the goroutine stall delay in the TestConcurrencyManagerBasic
framework from 1ms to 5ms. In cockroachdb#57273, we saw a flake due to a goroutine being
classified as stalled when it was actually waiting for a multi-goroutine
chain of events to fire (request exits lockTable, signals lockTable wait-queue,
which is noticed by watchForNotifications, which cancels the pushers context).
This chain of events plus the 1ms wait in the framework led to a flake under
stress roughly every 16k iterations. With this delay bumped to 3ms, I have never
reproduced the flake after over 2M iterations. This PR bumps the delay all the
way up to 5ms to be extra sure. This increases the runtime of all subtests
combined from 1.6s to 3.9s.

Co-authored-by: Nathan VanBenschoten <[email protected]>

release-20.1: gss: fix TestComposeGSS

Refs cockroachdb#56745

Release note: None

catalogkv: add testing of descriptor unwrapping and validation

This commit adds a framework to test that descriptors validate properly.
It also adds testdata and a bash script to generate that test data.

This test is to exercise a problematic path whereby tables constructed
in v19.1 would fail to validate in v20.2.

Release note: None

catalogkv: extend datadriven test for fk references with differring ids

Release note: None

catalogkv: add testing of descriptor unwrapping and validation

This commit adds a framework to test that descriptors validate properly.
It also adds testdata and a bash script to generate that test data.

This test is to exercise a problematic path whereby tables constructed
in v19.1 would fail to validate in v20.2.

Release note: None