- includes extended default driver connection parameter handling
- minor refactoring

fixes #1183

also refactors URL path evaluation into smaller methods

fixes #1106

When creating sqlite connections from a url with DriverManager, pass the 'path' key the driver expects instead of the 'dbname' key other drivers expect.

tests to come

- Fixed docblocks
- Removed return statements on void methods
- Cleaned up unused private / local variables
- Fixed license issues
- Removed SVN leftovers
- Fixed doctrine-project.org links
- Added line breaks before return statements

This is necessary because pdo_sqlsrv still has some little bugs that
prevent it from being used in all use-cases. Additionally only sqlsrv
can make use of the Azure federations features.