[2.0] DDC-115 - Proper fix of global namespace problem was in the ClassMetadataInfo, a namespace plus seperator was appended for reasons of shortcuts. However this broke associations in global namespace. Changes to ClassMetadataFactory were reverted and fix plus tests applied to ClassMetadataInfo.

[2.0] DDC-115 - Fix for multiple class metadata instances because of classes being addressed with or without prepending namespace separator.

[2.0] DBAL cleanups (DDC-46). Proxy class improvements (DDC-19, DDC-39). Started new UPGRADE_TO document for upgrade instructions between advancing Doctrine 2 versions.

[2.0] Accomodate joincolumn names in the metadata, in the selection and the hydration processes. Improved Api of the ProxyFactory. Working implementation of lazy loading for *-to-one associations (affects #2348)

[2.0] Fixed issues discovered during code coverage report generation. Made all ClassMetadata properties public (good reasons, read the class docblock). Performance improvements.

[2.0] Refactored SQL query building process and hydration. Hydration should now support result sets with any number of root components. Introducing ResultSetMapping that is used by hydration instead of queryComponents. This allows mapping of arbitrary SQL queries (NativeQuery).

First tests for basic collection implementation. First experimental use of closures (Currently commented out, because the svn server makes a syntax check against 5.2.x).