[GHC] #10284: Create a dedicated `TypeError` exception type

[GHC]

#10284: Create a dedicated `TypeError` exception type
-------------------------------------+-------------------------------------
        Reporter:  kosmikus          |                   Owner:  kanetw
            Type:  feature request   |                  Status:  closed
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Core Libraries    |                 Version:  7.10.1
      Resolution:  fixed             |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
                                     |  typecheck/should_run/T10284
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:  phab:D866
-------------------------------------+-------------------------------------
Changes (by thomie):

 * testcase:   => typecheck/should_run/T10284
 * milestone:   => 7.12.1


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10284#comment:10>
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