[GHC] #11043: Bump `ghc-prim` to 0.5.0.0

[GHC]

#11043: Bump `ghc-prim` to 0.5.0.0
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        Reporter:  hvr               |                Owner:
            Type:  task              |               Status:  new
        Priority:  high              |            Milestone:  8.0.1
       Component:  libraries/base    |              Version:  7.11
      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 Herbert Valerio Riedel <hvr@…>):

 In [changeset:"4b8b9347f19c6a260c9f93032447bc82f6457912/ghc"
 4b8b9347/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="4b8b9347f19c6a260c9f93032447bc82f6457912"
 ghc-prim: add API delta as changelog (re #11043)

 [skip ci]
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11043#comment:1>
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