[GHC] #5323: Add ($!!) and force to deepseq

[GHC]

#5323: Add ($!!) and force to deepseq
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    Reporter:  ivanm              |        Owner:              
        Type:  feature request    |       Status:  patch       
    Priority:  high               |    Milestone:  7.4.1       
   Component:  libraries (other)  |      Version:  7.0.3       
    Keywords:                     |     Testcase:              
   Blockedby:                     |   Difficulty:              
          Os:  Unknown/Multiple   |     Blocking:              
Architecture:  Unknown/Multiple   |      Failure:  None/Unknown
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Changes (by igloo):

  * priority:  normal => high
  * status:  new => patch
  * milestone:  => 7.4.1


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5323#comment:1>
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