[2.0][DDC-206] Fixed wrong enumeration value. Changed XSD location to point to the document on the website.

[2.0][DDC-122][DDC-97][DDC-98][DDC-147] Refactored metadata mapping drivers by removing the useless PRELOAD mode. Introduced ClassMetadataFactory#getAllMetadata. Classloader simplifications. Old classloaders deprecated. New Doctrine\Common\ClassLoader is almost the same as the previous IsolatedClassLoader.

[2.0] DDC-169 - Further refactorings, schema max identifier length is now used for asset generation. Added platform-wide test for unique index generation with create table.

[2.0][DDC-171] Fixed (second attempt). Some other cleanups. Performance fix for mock Statement used in hydration performance tests for more accurate and better results.

[2.0] DDC-176 - Disallow iterate() over fetch-join collections by the means of an exception on parsing the DQL query.

[2.0] DDC-194 - Fixed infinite recursion issue with references and @PostLoad annotation by telling proxy to be loaded before calling EntityPersister->load...

[2.0] DDC-168 - Add test-case that proves that the order of reflFields matters for inserting, which causes problems with caching.

[2.0] Fixed more STRICT standards notices (only variables should be passed by reference...). @beberlei, error_reporting=E_ALL | E_STRICT

[2.0] Fixed PHP Notice in SchemaTest (only variables should be passed by reference...) and a few other cosmetics in various parts.

[2.0] DDC-197 - Extended CLOB Test-Case even more with additional update of the string, which still works on OCI8

[2.0] DDC-197 - Fix for OCI8 returning CLOBs as OCI-LOB instances, was it that easy? The test suggets that inserting clobs is not even requiring the temporary syntax anymore.. Great!

[2.0] DDC-169 - Finished ALTER Table TableDiff refactoring, adding code to handle index and FK changes. Added a general functional test for alter table against all platforms.

[2.0] DDC-169 - AbstractPlatform::getAlterTableSql() now accepts only a TableDiff instance as argument across all platforms.