This version backports bugfixes related to the generation of queries with joins
and configuration of the result set cache profile of a query.

Total issues resolved: **2**

Bug

- [6748: Fix missing null check on `AbstractQuery#setResultCacheProfile()`](https://github.com/doctrine/doctrine2/pull/6748) thanks to @KonstantinKuklin
- [6812: Fix syntax error when join unrelated entity with discriminator entity](https://github.com/doctrine/doctrine2/pull/6812) thanks to @Deltachaos