[GHC] #9169: Add mkWeakTMVar to Control.Concurrent.STM.TMVar

[GHC]

#9169: Add mkWeakTMVar to Control.Concurrent.STM.TMVar
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              Reporter:  basvandijk  |            Owner:  thoughtpolice
                  Type:  feature     |           Status:  upstream
  request                            |        Milestone:  7.10.1
              Priority:  normal      |          Version:  7.8.2
             Component:  Core        |         Keywords:  stm
  Libraries                          |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Unknown
      Operating System:              |       Blocked By:
  Unknown/Multiple                   |  Related Tickets:
       Type of failure:              |
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by Austin Seipp <austin@…>):

 In [changeset:"8afdf274194e77e85e6a08dc4963022c56fc29d8/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="8afdf274194e77e85e6a08dc4963022c56fc29d8"
 stm: update submodule for #9169 addition

 Signed-off-by: Austin Seipp <austin at well-typed.com>
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9169#comment:7>
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