[GHC] Batch modify: #5291, #5302, #7723, #9249, #9981, #10582, #10930, ...

[GHC]

Batch modification to #5291, #5302, #7723, #9249, #9981, #10582, #10930, #11091, #11958, #13039, #13064, #13182, #13779 by bgamari:
milestone to 

Comment:
These tasks won't happen for 8.4 and have been sitting at low priority for quite some time. Consequently I am un-milestoning them. Don't let this stop you, the interested reader, from picking one up, however.

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Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=5291%2C5302%2C7723%2C9249%2C9981%2C10582%2C10930%2C11091%2C11958%2C13039%2C13064%2C13182%2C13779>
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