[GHC] #8785: Replace hooks API in the RTS with something better

[GHC]

#8785: Replace hooks API in the RTS with something better
-------------------------------------+-------------------------------------
        Reporter:  simonmar          |                   Owner:  simonmar
            Type:  task              |                  Status:  new
        Priority:  high              |               Milestone:  7.12.1
       Component:  Runtime System    |                 Version:  7.6.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:  Phab:D8
-------------------------------------+-------------------------------------
Changes (by thoughtpolice):

 * differential:   => Phab:D8
 * milestone:  7.10.1 => 7.12.1


Comment:

 See the related (but old) patch: Phab:D8.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8785#comment:1>
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