Fix jsonb_object_agg crash after eliminating null-valued pairs.

Micro-optimize datatype conversions in datum_to_jsonb_internal.

Remove fundamentally-redundant processing in jsonb_agg() et al.

Revise APIs for pushJsonbValue() and associated routines.

Add a macro for the declared typlen of type timetz.

Clean up memory leakage that occurs in context callback functions.

Provide error context when an error is thrown within WaitOnLock().

Avoid faulty alignment of Datums in build_sorted_items().

Grab the low-hanging fruit from forcing USE_FLOAT8_BYVAL to true.

Grab the low-hanging fruit from forcing sizeof(Datum) to 8.

Make type Datum be 8 bytes wide everywhere.

Mop-up for Datum conversion cleanups.

Fix incorrect return value in brin_minmax_multi_distance_numeric().

Split up pgfdw_report_error so that we can mark it pg_noreturn.