[commit: ghc] wip/T5462's head updated: Use MINIMAL to decide whether we can derive or not, and do not reject newtypes (a8e5cd9)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

Branch 'wip/T5462' now includes:

     64dc4d1 Re-center perf-numbers for T5631
     6a1c05f A little refactoring of HsSplice and friends
     77f8221 Temporarily disable T3064 (see #9771)
     0a8e899 Remove redundant contexts from Foldable methods
     7452b6a Merge branch 'master' into wip/T5462
     a8e5cd9 Use MINIMAL to decide whether we can derive or not, and do not reject newtypes