Moves a MySQL-specific method to the MySQL adapter from the PDO adapter.
being to use appveyor to test sqlsrv builds in windows
cleanup config
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Merge pull request #254 from cyrusboadway/feature/cleanup-mysql-only-method

Moves a MySQL-specific method to the MySQL adapter from the PDO adapter
starting to add env vars
Merge branch '0.3.x-dev' of github.com:robmorgan/phinx into 0.3.x-dev
Merge branch '0.3.x-dev' into dakota-sqlsrv