Merge remote-tracking branch 'origin/release/v0.9.2' into release/v0.9.2

Cherry pick #450 repl: track updates to PRIMARY KEY correctly

Merge pull request #424 from block/kolbek-tidb-61498

bump tidb parser version

Merge pull request #396 from morgo/exclude-generated-cols-from-checksum

exclude generated columns from checksum

Merge pull request #366 from morgo/mtocker-document-lock-wait-timeout

sort USAGE alphabetically, add lock-wait-timeout docs

Merge pull request #350 from cashapp/prudhvi.mdl_lock_name_fix

Use tablename for metadatalock name as tablename respsects both the m…

Merge pull request #342 from cashapp/prudhvi.mdl_lock_name_change

Use quoted table name as lock name

Merge pull request #336 from cashapp/mtocker-fix-div-by-zero

repl: fix div by zero error

Merge pull request #332 from cashapp/mtocker-fix-all-changes-not-flushed

Fix changes not synced error

Merge pull request #328 from cashapp/mtocker-fix-checkpoint

Use dbconn.Exec in checkpoint