[GHC] #9873: Use CONF_GCC_LINKER_OPTS_STAGE2 only in stage2

[GHC]

#9873: Use CONF_GCC_LINKER_OPTS_STAGE2 only in stage2
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              Reporter:  nomeata     |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Build       |          Version:  7.9
  System                             |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by erikd):

 It fails the first time it tries to run an executable generated by the
 stage1 compiler.

 During some earlier testing I had disabled compiling the `dyn` way, so the
 first failure was with the `inplace/bin/ghc-stage2` binary. If I re-enable
 the `dyn` way, the first failure is when the build tries to run
 `inplace/bin/dll-split`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9873#comment:5>
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