[GHC] #9697: ./configure fails due to obselete usage of 'find -perm' in aclocal.m4

[GHC]

#9697: ./configure fails due to obselete usage of 'find -perm' in aclocal.m4
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              Reporter:  nich        |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Build       |          Version:  7.8.3
  System                             |         Keywords:  aclocal.m4 find
            Resolution:              |  perm
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Easy (less than 1
       Type of failure:  Building    |  hour)
  GHC failed                         |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
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Comment (by nich):

 Apologies, I diff'ed two commits in the wrong a/b order.
 I confirm it works for 'ghc master', though as the change is specific to
 LLVM targets which I don't use, it obviously needs a little more
 validation.
 I'll attach the correct diff.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9697#comment:2>
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