[GHC] #10751: Implement Phase 1 of MonadFail Proposal (MFP)

[GHC]

#10751: Implement Phase 1 of MonadFail Proposal (MFP)
-------------------------------------+-------------------------------------
        Reporter:  hvr               |                   Owner:  quchen
            Type:  task              |                  Status:  patch
        Priority:  highest           |               Milestone:  8.0.1
       Component:  Compiler          |                 Version:  7.10.2
      Resolution:                    |                Keywords:  report-
                                     |  impact
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:  Phab:D1248
-------------------------------------+-------------------------------------
Changes (by hvr):

 * priority:  normal => highest
 * differential:   => Phab:D1248


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10751#comment:8>
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