* PHP-5.5:
Added PGSQL_TEST_CONNSTR env var support for ext/pgsql tests
Fixed bug #67462 PDO_PGSQL::beginTransaction() wrongly throws exception when not in transaction
Use string escape for exotic types that allows to handle any data types. i.e. Array, JSON, JSONB, etc will work.
Add escape only query for better performance which removes meta data look up. Limitations forced by pg_convert() can be avoided with this. PGSQL_DML_ESCAPE constant is added for it.