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

1 files changed, 2 insertions, 1 deletions

diff --git a/compiler/stranal/DmdAnal.hs b/compiler/stranal/DmdAnal.hs
index f7dbdde8a2..6ef911f6c0 100644
--- a/compiler/stranal/DmdAnal.hs
+++ b/compiler/stranal/DmdAnal.hs
@@ -48,7 +48,8 @@ dmdAnalProgram :: DynFlags -> FamInstEnvs -> CoreProgram -> IO CoreProgram
 dmdAnalProgram dflags fam_envs binds
   = do {
         let { binds_plus_dmds = do_prog binds } ;
-        dumpIfSet_dyn dflags Opt_D_dump_strsigs "Strictness signatures" $
+        dumpIfSet_dyn dflags Opt_D_dump_str_signatures
+                      "Strictness signatures" $
             dumpStrSig binds_plus_dmds ;
         return binds_plus_dmds
     }