[DBAL-54] [DBAL-420] Cannot drop schema using IDENTITY strategy in PostgreSQL

fix named_token

Add Symfony Console dependency to composer.json

    Connection#insert(),  Connection#update() and Connection#delete(). Closes GH-271

Fixing issue when number of positional parameters != number of given types

Improve list SQL Server table indexes

Fix SQL Server default constraints

Fix list SQL Server composite foreign keys

Allow removing column comment on some platforms

Fix ModifyLimitQueryTest

Add length in the OCI8 bindParam

DBAL-54 was fixed in commit 3d55dc8e by
changing SQL queries order. However it was later reintroduced.

This patch uses a different, more future-proof way, approach by using
DROP SEQUENCE ... CASCADE syntax, and thus does not depend on queries order.

Fix platform create constraint foreign table name quotation

Refactor SQL Server keyword dictionaries and MsSQL leftovers

OraclePlatform sequence naming for primary keys

Add column collation support for SQL Server