[GHC] #11502: Scrutinize use of 'long' in rts/

[GHC]

#11502: Scrutinize use of 'long' in rts/
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        Reporter:  thomie            |                Owner:  MarcelineVQ
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by hvr):

 Given we're slowly moving to C99-izing the code (se e.g.
 db9de7eb3e91820024f673bfdb6fb8064cfed20d), it may make sense to take this
 opportunity to use `<stdint.h>`-typedefs instead, e.g.

  - `int64_t` instead of `StgInt64`
  - `uint64_t` instead of `StgWord64`
  - `intptr_t` instead of `StgInt`
  - `uintptr_t` instead of `StgWord`

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11502#comment:4>
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