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, 1 insertions, 1 deletions

diff --git a/utils/mkUserGuidePart/Options/CompilerDebugging.hs b/utils/mkUserGuidePart/Options/CompilerDebugging.hs
index 3f1d89999d..ce84a2a48b 100644
--- a/utils/mkUserGuidePart/Options/CompilerDebugging.hs
+++ b/utils/mkUserGuidePart/Options/CompilerDebugging.hs
@@ -120,7 +120,7 @@ compilerDebuggingOptions =
          , flagDescription = "Dump strictness analyser output"
          , flagType = DynamicFlag
          }
-  , flag { flagName = "-ddump-strsigs"
+  , flag { flagName = "-ddump-str-signatures"
          , flagDescription = "Dump strictness signatures"
          , flagType = DynamicFlag
          }