[GHC] #9177: Suggest Int when user uses int

[GHC]

#9177: Suggest Int when user uses int
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        Reporter:  nomeata           |            Owner:  nomeata
            Type:  feature request   |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:  #1388
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Comment (by nomeata):

 I have two variants: One that suggests `Integer` when `integer` is typed,
 and one that suggests even `Integer` if `integerr` is typed (using the
 same edit distance metric stuff). I’ll push the first, followed by the
 second, so that one can easily revert.

 Of course there is no limit on how smart the error message can be. In
 `type Foo = eq`, one cannot mean `Eq` (as it is a class), but that is not
 available on the level of `OccNames`. But I guess the suggestion is still
 an improvement.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9177#comment:3>
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