pg_regress: Emit TAP compliant output

Consider a failed process as a failed test in pg_regress

Add diagnostic output on error in pump_until

Remove more unused module imports from TAP tests

Remove unused module imports from TAP tests

SSL TAP test backend library independence refactoring

Guard against reallocation failure in pg_regress

Use test functions in pg_rewind test module

Ensure that STDERR is empty in connect_ok tests

Replace Test::More plans with done_testing

Fix typo in archive modules docs