[GHC] #12517: Simplify runghc command line options

[GHC]

#12517: Simplify runghc command line options
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        Reporter:  harendra          |                Owner:  harendra
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  None              |              Version:  8.0.1
      Resolution:                    |             Keywords:  runghc
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 harendra):

 > Note that GHC doesn't even support filenames starting with a dash

 Yeah, I had tried this earlier and wondered why do we have this if ghc
 does not support it, but I ignored it (maybe in future ghc might support
 that). Now I think we should just get rid of it to keep the code and
 documentation simple.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12517#comment:4>
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