[GHC] #10728: Add e.g. "-N<=4" in addition to the fixed "-N4" and variable "-N" RTS options

[GHC]

#10728: Add e.g. "-N<=4" in addition to the fixed "-N4" and variable "-N" RTS
options
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        Reporter:  rrnewton          |                Owner:  MarcelineVQ
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Runtime System    |              Version:  7.10.2
      Resolution:  fixed             |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9221, #8224      |  Differential Rev(s):  Phab:D1650,
       Wiki Page:                    |  Phab:D1677
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Comment (by MarcelineVQ):

 For me the feature is more important than the name so I don't mind
 changing to anything at all if people need it changed, I'll wait and see.
 Currently I'm looking into a rewrite for rts flag parsing so here's some
 additional considerations:
 * maxN may not end up having a weird overlap if parsing works differently
 * it could make sense to not have maxN added yet in case it's likely to
 change again in the semi-near future
 * conversely if there ends up being some flag changes anyway then a newer
 one changing isn't as big a deal

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10728#comment:24>
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