[GHC] #9259: GHCi should list its available command line options

[GHC]

#9259: GHCi should list its available command line options
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        Reporter:  jstolarek   |            Owner:
            Type:  feature     |           Status:  new
  request                      |        Milestone:
        Priority:  normal      |          Version:
       Component:  Driver      |         Keywords:
      Resolution:              |     Architecture:  Unknown/Multiple
Operating System:              |       Difficulty:  Easy (less than 1 hour)
  Unknown/Multiple             |       Blocked By:
 Type of failure:              |  Related Tickets:
  None/Unknown                 |
       Test Case:              |
        Blocking:              |
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Comment (by jstolarek):

 Oh, and once this is done we should update [[GhcFile(driver/ghci-
 usage.txt)]] to inform user about this possibility (see [[GhcFile(driver
 /ghc-usage.txt)]] for an example).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9259#comment:1>
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