[GHC] #4343: Add throwSTM and generalize catchSTM

[GHC]

#4343: Add throwSTM and generalize catchSTM
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    Reporter:  basvandijk        |       Owner:                                                           
        Type:  proposal          |      Status:  patch                                                    
    Priority:  normal            |   Component:  libraries (other)                                        
     Version:  7.1               |    Keywords:  stm, exception, throw, throwIO, throwSTM, catch, catchSTM
    Testcase:                    |   Blockedby:                                                           
          Os:  Unknown/Multiple  |    Blocking:                                                           
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown                                             
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Changes (by basvandijk):

  * status:  new => patch


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4343#comment:2>
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