[GHC] #1248: Use sensible flags for ghc -M

[GHC]

#1248: Use sensible flags for ghc -M
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 Reporter:  simonpj   |          Owner:  igloo      
     Type:  task      |         Status:  new        
 Priority:  normal    |      Milestone:  6.10.1     
Component:  Compiler  |        Version:  6.6        
 Severity:  normal    |     Resolution:             
 Keywords:            |     Difficulty:  Easy (1 hr)
 Testcase:            |   Architecture:  Unknown    
       Os:  Unknown   |  
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Comment (by simonmar):

 Yes, but with single dashes only.  Right now the only double-dash options
 are "mode" options, which seems as good a convention as any.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1248#comment:5>
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