[GHC] #9224: Add support for binary integer literals

[GHC]

#9224: Add support for binary integer literals
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        Reporter:  hvr               |            Owner:
            Type:  feature request   |           Status:  new
        Priority:  normal            |        Milestone:  7.10.1
       Component:  Compiler          |          Version:
  (Parser)                           |         Keywords:  literals
      Resolution:                    |     Architecture:  Unknown/Multiple
Operating System:  Unknown/Multiple  |       Difficulty:  Easy (less than 1
 Type of failure:  None/Unknown      |  hour)
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Herbert Valerio Riedel <hvr@…>):

 In [changeset:"dab0fa06fa33eeb45cef16c06c41d6c45b102451/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="dab0fa06fa33eeb45cef16c06c41d6c45b102451"
 Update Cabal to BinaryLiterals-aware 1.20 version

 In 1c0b5fdc9f2b6ea8166cc565383d4cd20432343c (re #9224) `BinaryLiterals`
 was temporarily added to T4437's `expectedGhcOnlyExtensions` list. This
 can now reverted as Cabal has been made aware of `BinaryLiterals`
 (see haskell/cabal#1970 and haskell/cabal#1972).

 updates Cabal submodule

 Signed-off-by: Herbert Valerio Riedel <hvr at gnu.org>
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9224#comment:4>
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