[GHC] #9784: Improve error message for misplaced quote inside promoted qualified type

[GHC]

#9784: Improve error message for misplaced quote inside promoted qualified type
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              Reporter:  crockeea    |            Owner:
                  Type:  feature     |           Status:  new
  request                            |        Milestone:
              Priority:  normal      |          Version:  7.8.3
             Component:  Compiler    |         Keywords:
  (Parser)                           |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Unknown
      Operating System:              |       Blocked By:
  Unknown/Multiple                   |  Related Tickets:  #3155
       Type of failure:  GHC         |
  rejects valid program              |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by crockeea):

 Yes, I think the lexer makes more sense. Although it doesn't quite make
 sense to me, presumably there's a good reason for making `'Foo.Z` the
 right thing. If that's the case, then I think I'd rather see a lexer
 warning that have it lex correctly.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9784#comment:6>
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