[GHC] #9890: RTS -qa option is helpful but under-documented

[GHC]

#9890: RTS -qa option is helpful but under-documented
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        Reporter:  adamgundry        |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.0.2
       Component:  Runtime System    |              Version:  7.8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Documentation     |  Unknown/Multiple
  bug                                |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2850
       Wiki Page:                    |
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Changes (by bgamari):

 * owner:  simonmar =>
 * status:  closed => new
 * differential:   => Phab:D2850
 * resolution:  fixed =>
 * milestone:  7.10.1 => 8.0.2


Comment:

 It turns out that there is actually **still** no mention of this flag in
 the users guide. Here's a patch to fix this.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9890#comment:6>
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