patch applied (packages/base): Moved MonadPlus instance for STM from Control.Monad.STM to GHC.Conc to avoid an orphaned instance

[Simon Marlow]

Sun May 16 09:06:51 PDT 2010  Bas van Dijk <v.dijk.bas at gmail.com>
  * Moved MonadPlus instance for STM from Control.Monad.STM to GHC.Conc to avoid an orphaned instance

    M ./GHC/Conc.lhs +4

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=packages/base;a=darcs_commitdiff;h=20100516160651-ae560-d1d1d7ed811be6a9eb955b93553b1c2d4094b719.gz