Linting corrections

* Bring back LANGUAGE pragmas in GHC.IO.Handle.Lock.Windows
* Exclude some modules that are wrongfully reported

libraries/base/.hlint.yaml

@@ -23,7 +23,7 @@
 # lints that we otherwise want applied elsewhere. Such exceptions are listed
 # below.
 
-- ignore: {name: Unused LANGUAGE pragma, within: [GHC.IO.Encoding.CodePage]}
+- ignore: {name: Unused LANGUAGE pragma, within: [GHC.IO.Encoding.CodePage, GHC.IO.Handle.Lock.Windows, GHC.Event.KQueue]}
 - ignore: {name: Redundant do, within: [GHC.IO.Handle.Text.commitBuffer]}
 - ignore: {name: Use fewer imports, within: [GHC.Windows]}
 - ignore: {name: Use fewer imports, within: [GHC.Event.Control]}