[DBAL-590] Remove Column#visit(). The table is responsible for this, because of dependencies.
Fix bug in testsuite where extending from another test causes those tests to be skipped.
Fix more occurances of the extending Test bug, "reactivating" a total of 200 tests. SQLAnywhere is missing and is a bit more annyoing to fix, because of a deep inheritance hierachy.
[DBAL-630] Try reproducing bool with emulated prepares without much success.
Merge branch 'DBAL-630'
Fix test to run on Travis
[DBAL-756] Add new method AbstractPlatform#getVendor().
[DBAL-630] skip test aslong as failure case is not fully understood.
Fix version
Release 2.5.0-BETA2
Bump version to 2.5.0-DEV
Revert "[DBAL-756] Add new method AbstractPlatform#getVendor()."

This reverts commit 5a46f577aa8f019a0670a9aaac2e49c37fae6434.
add additional integer type mapping occurring in SQL Anywhere 16
fix driver error while introspecting sequences in SQL Server 2012
don't return warnings as errors in sqlsrv driver
Merge pull request #490 from deeky666/suppress-sqlsrv-driver-server-warnings

Don't return warnings as errors in sqlsrv driver
Merge pull request #489 from deeky666/fix-sqlserver2012-sequence-introspection

Fix driver error while introspecting sequences in SQL Server 2012
Merge pull request #488 from deeky666/fix-sqlanywhere16-integer-type-mapping

Fix integer type mapping in SQL Anywhere 16
remove comment
fix column comment functional test