[GHC] #12575: Support US spelling of `specialise` throughout

[GHC]

#12575: Support US spelling of `specialise` throughout
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        Reporter:  crockeea          |                Owner:  tmcgilchrist
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2542
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"151edd89045c2aed20534c6826711db6a3f253c9/ghc" 151edd8/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="151edd89045c2aed20534c6826711db6a3f253c9"
 Recognise US spelling for specialisation flags.

 The user guide says that we allow the user to use `specialise` or
 `specialize` interchangeably but this wasn't the case for the relevant
 flags. This patch adds aliases for the flags which control
 specialisation.

 Reviewers: erikd, austin, mpickering, bgamari

 Reviewed By: mpickering, bgamari

 Subscribers: mpickering, thomie

 Differential Revision: https://phabricator.haskell.org/D2542

 GHC Trac Issues: #12575
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12575#comment:8>
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