[DBAL-492] Fix bug in foreign key comparision when inside a subschema.
Merge branch 'DBAL-492' into 2.3
Fixing issue when number of positional parameters != number of given types
Merge branch 'DBAL-488' into 2.3
fix named_token

regex pattern does not support sql casting using :: operator for example select mydate::date from mytable;
add test for ticket gh-259

fix :: operator in sql parser
Merge branch 'DBAL-429' into 2.3
[DBAL-54] Cannot drop schema using IDENTITY strategy in PostgreSQL

DBAL-54 was fixed in commit 3d55dc8eec235c09d64b061456295a1951299496 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.
Merge branch 'DBAL-54' into 2.3
Revert "Fixing issue when number of positional parameters != number of given types"

This reverts commit d70321990d2146e7f615ea1eef2e5b9e18494e0c.
[DBAL-487] Map integer unsigned to Doctrine integer.
Merge branch 'DBAL-487' into 2.3