[GHC] #10738: Make Exception datatypes into newtypes

[GHC]

#10738: Make Exception datatypes into newtypes
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                   Owner:
            Type:  feature request   |                  Status:  closed
        Priority:  normal            |               Milestone:  8.0.1
       Component:  libraries/base    |                 Version:  7.10.2
      Resolution:  fixed             |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #4961             |  Differential Revisions:  Phab:D1131
-------------------------------------+-------------------------------------
Changes (by thomie):

 * status:  new => closed
 * resolution:   => fixed
 * milestone:   => 8.0.1


Comment:

 That benchmark isn't very stable. perf.haskell.org/ghc reports reports
 0.385 seconds  currently, and it jumps up and down quite a bit. Let's
 close this.

 https://perf.haskell.org/ghc/#graph/nofib/time/cryptarithm1

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10738#comment:5>
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