[GHC] #1407: Add the ability to :set -l{foo} in .ghci files

[GHC]

#1407: Add the ability to :set -l{foo} in .ghci files
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    Reporter:  guest            |        Owner:         
        Type:  feature request  |       Status:  new    
    Priority:  normal           |    Milestone:  6.8    
   Component:  GHCi             |      Version:  6.6.1  
    Severity:  minor            |   Resolution:         
    Keywords:                   |   Difficulty:  Unknown
          Os:  Unknown          |     Testcase:         
Architecture:  Unknown          |  
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Changes (by igloo):

  * milestone:  => 6.8

Comment:

 This is related to allowing -package flags in OPTIONS_GHC, which is talked
 about in http://hackage.haskell.org/trac/ghc/wiki/GhcPackages

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1407>
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