[2.0] DDC-341 - Added Composite Model-Set and 3 tests, fixed two bugs in SqlWalker with Composite Key support

[2.0][DDC-354][DDC-425] Fixed. Encapsulated SQL logging better in the DBAL. Added binding types to DBAL mapping types as well as using these binding types in the persisters. Query and NativeQuery now support PDO binding types as well as DBAL mapping types when binding parameters.

[2.0][DDC-459] Moved Doctrine\ORM\AbstractQuery to Doctrine\ORM\Query\AbstractQuery, which is compatible with Doctrine Coding Standards

[2.0][DDC-458] Fixed issue with IN () support when providing numeric values separated by comma without spaces.

[2.0] Fixed issue with DQL that was not considering input parameter 10. Also added support to retrieve the generated AST.

[2.0] Fixed custom functions support that was failing to be processed. Also fixed syntax error of Function support.

[2.0] Code cleanups. Preparations for DDC-193. Fixed DDC-399, type configuration remains global for now but the irritating instance methods on the Configuration have been removed. Use Type::addType et al. Added TODOs for naming standards.

[2.0][DDC-395] Applied the provided patch of Jordi Boggiano removing some trailing whitespaces and fixing missing public keywords

[2.0] Add missing Query::HINT_CUSTOM_OUTPUT_WALKER - it wasn't possible to change the output walker before without extending and overwriting one large method in Query

[2.0][DDC-92] Fixed. Patch provided by Christian Heinrich. [DDC-274] Started some method renaming. [DDC-142] Fixed (join column names and discriminator column names dont support quoting) [DDC-258] Fixed.

[2.0][DDC-265] Partial support to inheritanceType in AnnotationExporter. Still needs to add the discriminator column.

[2.0] DDC-338 - Changed DQL Parser to comply with ordered collections when they are fetch joined (OMG, thanks to roman and guilherme for the detailed discussion on how to implement this)

[2.0]  DDC-330 - Fix SIZE(collectionValueExpression) using a COUNT(field) to COUNT(*) because in many to many scenarios and with several join columns a COUNT(fieldA, fieldB) would have been generated, which is not valid sql.

[2.0] DDC-135 DDC-177 Implement missing WITH clause, disallow use of ON clause by throwing an exception

[2.0] DDC-320 - Fixed Substring across all platforms using AbstractPlatform::getSubstringExpression() instead of the "hand-built" one.

[2.0] Added DQL Functions and Aggregate Functional Test-Case and fixed two small bugs in DQL Parser that came to light, also it seems that some of the functions are not supported by Oracle and Sqlite and some cases of SUBSTRING and TRIM produce bugs on MySQL.