[GHC] #12870: Allow completely disabling +RTS options parsing

[GHC]

#12870: Allow completely disabling +RTS options parsing
-------------------------------------+-------------------------------------
        Reporter:  nh2               |                Owner:  AndreasK
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3740
       Wiki Page:                    |  Phab:D4486
-------------------------------------+-------------------------------------

Comment (by alpmestan):

 I'm seeing the following failures with commit 8b823f270e:

 {{{
    /run/user/1001/ghctest-9vjo4opa/test   spaces/./rts/flags/T12870b.run
 T12870b [bad heap profile] (profasm)
    /run/user/1001/ghctest-9vjo4opa/test   spaces/./rts/flags/T12870c.run
 T12870c [bad heap profile] (profasm)
    /run/user/1001/ghctest-9vjo4opa/test   spaces/./rts/flags/T12870e.run
 T12870e [bad stdout] (profasm)
    /run/user/1001/ghctest-9vjo4opa/test   spaces/./rts/flags/T12870e.run
 T12870e [bad stdout] (profthreaded)
    /run/user/1001/ghctest-9vjo4opa/test   spaces/./rts/flags/T12870f.run
 T12870f [bad stdout] (profasm)
    /run/user/1001/ghctest-9vjo4opa/test   spaces/./rts/flags/T12870h.run
 T12870h [bad heap profile] (profasm)
    /run/user/1001/ghctest-9vjo4opa/test   spaces/./rts/flags/T12870f.run
 T12870f [bad stdout] (profthreaded)
 }}}

 Could someone else try to run those tests with those `WAY`s and let me
 know if they see the same failures?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12870#comment:14>
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