[GHC] #12841: Remove or explain target triple normalization

[GHC]

#12841: Remove or explain target triple normalization
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           Reporter:  shlevy         |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Build System   |           Version:  8.0.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Currently during configure, GHC normalizes the triple passed e.g. with
 --target. It's not clear why this happens, and it has caused problems in
 the past (See #12840, #12487), so we should probably either just remove
 the GHC triples altogether or add some explanations for why they're
 around.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12841>
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