[DBAL-2546] Fixed the failure of `Functional\StatementTest::testReuseStatementWithParameterBoundByReference()` on ibm_db2

The test is partially skipped due to:

1. Fetching blob as binary string from pdo_sqlsrv requires using `PDOStatement::bindColumn()` and `PDOStatement::fetch(PDO::FETCH_BIND)` which are not supported by the DBAL.
2. Setting encoding on the connection level is not supported: https://msdn.microsoft.com/en-us/library/ff628164(v=sql.105).aspx

[DBAL-2546] Fixed the failure of `Functional\StatementTest::testIncompletelyFetchedStatementDoesNotBlockConnection()` on pdo_mysql + libmysql

The test case being fixed should reset shared connection during teardown as one if its methods modifies connection attributes.

[DBAL-2508] Pass through index options when renaming index on table

[DBAL-2555] Fix date and datetimetz type mapping on Oracle

[DBAL-2511] Fix type list extraction in connection update method

[DBAL-2586] Fix current date and time SQL generation on SQL Server

[DBAL-2595] Remove fragile test that cannot be abstracted across PostgreSQL versions

[DBAL-2595] Fix retrieving last insert ID for FQN sequence name with OCI8

[DBAL-2594] Mark commented types implicitly

Hotfix 2313 infinite loop

IBM_DB2 platform doesn't handle offset without limit

Oracle platform ignores OFFSET in case if LIMIT is not specified

URL-decode URL-style DSN

add postgresql: "9.6"

Fix parameter list expansion inside PostgreSQL arrays

Fixed ORA-01427 when listing columns