[GHC] #7136: fix for os x package builder script

[GHC]

#7136: fix for os x package builder script
---------------------------------+------------------------------------------
 Reporter:  carter               |          Owner:                
     Type:  bug                  |         Status:  new           
 Priority:  normal               |      Component:  Build System  
  Version:  7.5                  |       Keywords:                
       Os:  MacOS X              |   Architecture:  x86_64 (amd64)
  Failure:  Building GHC failed  |       Testcase:                
Blockedby:                       |       Blocking:                
  Related:                       |  
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 the build script  in distrib/MacOS/mkinstaller
 has packagemaker hard coded for the /Developer/ location

 newer installs of OS X, eg Lion and Mountain lion, have packagemaker
 installed separately,

 so the most natural hard coded path for package maker (the shell command)
 would be
 /Applications/PackageMaker.app/Contents/MacOS/PackageMaker

 i'm calling it a build  system bug, though its more of a "package system"
 bug

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7136>
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