[DBAL-555] Fix using Identifier assets and quoting

[DBAL-717] Fix bug in MasterSlaveConnection with keepSlave option and switch back after transaction.

the test testKeepSlaveBeginTransactionStaysOnMaster does not begin a transaction, I have put a begin transaction, and now it fails,

the fix is here, if it makes sense
https://github.com/ananda-agrawal/dbal/commit/eb9262afb3955e4974d5a713b495a544b66a5cf7

Besides the table name, the column name has to be quoted in column comments

[DBAL-320] Add insert operation to QueryBuilder

 - name platform 'sqlsrv' nonexistent and E_NOTICE index array.

Update TestInit.php for new autoloading stuff

Fix deprecated CLOB type declaration in SQL Server platform

[DBAL-555] replace a bunch of occurances of $diff->name and $diff->newName with quoted identifier version.

This is at least needed when adding a autoincrement column

Added support for namespaces(schemas) in PostgreSql platform for Views

Fix IBM DB2 implementation / ibm_db2 driver

Prevent autoincrement columns from creating CREATE SEQUENCE statement

[DBAL-122] Fix BLOB type mapping in SQL Server platform

[DBAL-569] Add support for column comments / commented types in SQL Server

[DBAL-577] Fix platform's IN expression

Fix Connection::insert() with empty data given

[DBAL-567] Add charset option for pdo_pgsql driver

Document possible Sqlite datetime issues.

add charset option for pdo_pgsql driver

Update PostgreSqlPlatform.php

Implement ExceptionConverterDriver for drizzle_pdo_mysql

Improve driver exception code conversion