[GHC] #4243: Make a proper options parser for the RTS

[GHC]

#4243: Make a proper options parser for the RTS
-------------------------------------+-------------------------------------
        Reporter:  igloo             |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Runtime System    |              Version:  6.13
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:  7535
 Related Tickets:  #9839             |  Differential Rev(s):
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"69822f0c5b67161b4d7558081bc94f6f3a7c5dbb/ghc"
 69822f0c/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="69822f0c5b67161b4d7558081bc94f6f3a7c5dbb"
 RtsFlags: Refactor some of the deeper switches

 This was previously nearly impossible to read; now it's merely
 difficult.

 Ideally we would do a more thorough refactoring of the RTS command line
 parser (#4243) but this is more effort than I have time for at the
 moment.

 Test Plan: Try using affected RTS flags

 Reviewers: simonmar, austin

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D1476

 GHC Trac Issues: #4243
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4243#comment:19>
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