[GHC] #9178: improve orphan instance warning

[GHC]

#9178: improve orphan instance warning
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        Reporter:  fphh              |            Owner:
            Type:  task              |           Status:  closed
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:  fixed             |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Changes (by nomeata):

 * status:  patch => closed
 * resolution:   => fixed


Comment:

 Also ok with me. That makes two of us, so I pushed it. Nevertheless: If
 someone wants to improve it, feel free to do so.

 Congrats, Heinrich, for your first contribution to GHC, I hope there will
 be more! :-)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9178#comment:5>
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