Fixed documentation for DBAL classes.
Fixed documentation for DBAL\Cache.
Fixed documentation for DBAL\Connections.
Fixed documentation for DBAL\Driver.
Fixed documentation for DBAL\Event.
Fixed documentation for DBAL\Id.
Fixed documentation for DBAL\Logging.
Fixed documentation for DBAL\Platforms.
Fixed documentation for DBAL\Portability.
Fixed documentation for DBAL\Query
Fixed documentation for DBAL\Schema.
Fixed documentation for DBAL\Sharding.
Fixed documentation for DBAL\Tools.
Fixed documentation for DBAL\Types.
Removed return statements on void methods.
Cleaned up unused private / local variables.
Fixed disparate documentation issues.