[GHC] #15277: Move field name resolution to the type-checker

[GHC]

#15277: Move field name resolution to the type-checker
-------------------------------------+-------------------------------------
           Reporter:  adamgundry     |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:  8.8.1
          Component:  Compiler       |           Version:  8.5
  (Type checker)                     |
           Keywords:  ORF            |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:  #15149
Differential Rev(s):                 |         Wiki Page:
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 Per discussion on #15149, we plan to make the type-checker responsible for
 all field name lookup in record construction, pattern-matching and
 updates. This should be simpler than the current story and let us get rid
 of `tcg_field_env`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15277>
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