Fix broken functional test for SQL server

Fix removing autoincrement column from a primary key

Add tsvector type support in PostgreSQL Platform

Close #795

[DBAL-1137] Fix infinite recursion on non-unique table/join alias in QueryBuilder

Close #790
Close #791

fixed typo

getSQLForJoins - infinite recursion if join alias is not unique

[DBAL-1115] Fix quoted identifiers for database creation SQL on SQL Anywhere

Add left-over console file

Fix: SQLite offset with no limit support

[DBAL-1123] Initialize database schema only once per PHPUnit run

[DBAL-1122] Cleanup PHPUnit test suite bootstrap

Close #777