Nested jsonb tests
Nested containment tests
jsonb nested field/index lookup tests
jsonb nested path extraction
jsonb exists tests
jsonb nested each tests
Merge branch 'jsonb-test-fixes' into jsonb_and_hstore
Remove hstore data changes
Merge branch 'jsonb-test-fixes' into jsonb_and_hstore

This is the last of the tests from hstore.
Remove last of the hstore2 regression tests