[GHC] #13583: configure.ac: handle AR=, NM= and other flags as arguments to ./configure

[GHC]

#13583: configure.ac: handle AR=, NM= and other flags as arguments to ./configure
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        Reporter:  slyfox            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by angerman):

 Doe this imply that if you want to use gold, you'd specify LD=ld.gold, or
 however that ld is called?
 And we can remove the logic that forces gold?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13583#comment:5>
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