[GHC] Batch modify: #5840, #5369, #5470, #5702, #5807, #6004, #7330, ...

[GHC]

Batch modification to #5840, #5369, #5470, #5702, #5807, #6004, #7330, #3782, #3903, #4831, #5646, #3960 by bgamari:
milestone to ⊥

Comment:
Moving DPH tickets out to _|_ as the project is more or less stagnant.

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Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=5840%2C5369%2C5470%2C5702%2C5807%2C6004%2C7330%2C3782%2C3903%2C4831%2C5646%2C3960>
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