[DBAL-335] Fix nasty bug in MasterSlaveConnection, connecting and writing to slave when using keepSlave option.

When parameters are passed to Doctrine\DBAL\Statement::execute, they are not passed to any enabled logger(s).

Based on whether we are on 32 or 64 bit platform, postgres will return a string or an int for the expected php type of a bigint that is > 32 bits.

Use dropAndCreateDatabase schema manager function in test initialization instead of individual versions of each.

[DDC-1657] Prevent autoincrement sequences from creating DROP SEQUENCE statements because of old/new schema missmatch.

The AbstractSchemaManager expects getting the regex with its
delimiters since 8beb732f but the tests were not updated.