[GHC] #2123: implement waitForProcess using signals

[GHC]

#2123: implement waitForProcess using signals
-------------------------------------+-------------------------------------
        Reporter:  simonmar          |            Owner:
            Type:  task              |           Status:  new
        Priority:  lowest            |        Milestone:  7.6.2
       Component:                    |          Version:  6.8.2
  libraries/process                  |         Keywords:
      Resolution:                    |     Architecture:  Unknown/Multiple
Operating System:  Unknown/Multiple  |       Difficulty:  Moderate (less
 Type of failure:  None/Unknown      |  than a day)
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+-------------------------------------
Changes (by redneb):

 * cc: redneb@… (added)
 * failure:   => None/Unknown


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2123#comment:13>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler