[GHC] #9859: Implement `calloc{,Bytes,Array,Array0}` allocators

[GHC]

#9859: Implement `calloc{,Bytes,Array,Array0}` allocators
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       Reporter:  ifesdjeen          |                   Owner:
           Type:  feature request    |                  Status:  new
       Priority:  normal             |               Milestone:  7.10.1
      Component:  libraries/base     |                 Version:  7.8.3
       Keywords:  ffi                |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Easy (less than 1  |         Type of failure:
  hour)                              |  None/Unknown
     Blocked By:                     |               Test Case:
Related Tickets:                     |                Blocking:
                                     |  Differential Revisions:  D527
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 Add zero-initialising versions of malloc{,Bytes,Array,Array0}

   * Add calloc and callocBytes to Foreign.Marshal.Alloc.
   * Add callocArray and callocArray0 to Foreign.Marshal.Array.

 Implemented in revision: [https://phabricator.haskell.org/D527]

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9859>
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