Added a new configuration option: defaultQueryHints, which allows to populate all queries by default set of hints.
Fix comment
Allow to use object as a hint value.
[DDC-3027] Avoid duplicated mapping using Embedded in MappedSuperclass
DDC-3123 - verifying that the UoW is not clearing extra inserts
DDC-3123 - the UoW should clear extra updates immediately
Merge pull request #1030 from doctrine/hotfix/DDC-3123-extra-updates-cleanup

DDC-3123 extra updates cleanup
Merge branch 'feature/default-query-hints' of https://github.com/Strate/doctrine2 into Strate-default-query-hints
Merge pull request #1023 from coma/DDC-3027

[DDC-3027] Avoid duplicated mapping using Embedded in MappedSuperclass
DDC-3123 - using `assertAttributeEmpty` (with message) instead of explicit reflection
Merge branch 'hotfix/DDC-3123-test-assertion-simplification'