[GHC] #11583: Make warning names more consistent

[GHC]

#11583: Make warning names more consistent
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:
            Type:  task              |               Status:  patch
        Priority:  high              |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1939
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"665849142bca36c14bcb25d64180c153a1ef1f2c/ghc" 6658491/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="665849142bca36c14bcb25d64180c153a1ef1f2c"
 Make warning names more consistent

 - Replace "Sigs" with "Signatures" in WarningFlag data constructors.
 - Replace "PatSyn" with "PatternSynonym" in WarningFlag data
   constructors.
 - Deprecate "missing-local-sigs" in favor of "missing-local-signatures".
 - Deprecate "missing-exported-sigs" in favor of
   "missing-exported-signatures".
 - Deprecate "missing-pat-syn-signatures" in favor of
   "missing-pattern-synonym-signatures".
 - Replace "ddump-strsigs" with "ddump-str-signatures"

 These complete the tasks that were explicitly mentioned in #11583

 Test Plan:
 Executed `ghc --show-options` and verified that the flags were changed
 as expected.

 Reviewers: svenpanne, austin, bgamari

 Reviewed By: austin, bgamari

 Subscribers: mpickering, thomie

 Differential Revision: https://phabricator.haskell.org/D1939

 GHC Trac Issues: #11583
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11583#comment:8>
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