Vladislav Zavialov authored Dec 28, 2019 and Marge Bot committed Dec 31, 2019

Fixed tests:

* haddockA039: added to all.T
* haddockE004: replaced with T17561 (marked as expect_broken)

New tests:

* haddockA040: deriving clause for a data instance
* haddockA041: haddock and CPP #include