[GHC] #10791: Add a --disable-large-memory-space configure option

[GHC]

#10791: Add a --disable-large-memory-space configure option
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              Reporter:  erikd       |             Owner:  erikd
                  Type:  feature     |            Status:  new
  request                            |
              Priority:  normal      |         Milestone:  7.12.1
             Component:  Build       |           Version:  7.11
  System                             |
              Keywords:              |  Operating System:  Unknown/Multiple
          Architecture:              |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
             Test Case:              |        Blocked By:
              Blocking:              |   Related Tickets:
Differential Revisions:              |
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 GHC recently started using large (1TB) address space on 64 bit systems.

 This feature is enabled by default but does not work on arm64-linux or
 amd64-solaris.

 Even just for testing, it would be nice to be able to disable this.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10791>
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