Rename module CmdOutdated.hs to Outdated.hs

The `Cmd*,hs` naming scheme is usually reserved for v2 commands and
this is a v1 command so renaming this to make way for a v2 version
of this command.

Since the `v2-outdated` command does everything the `v1` version of
the command does, this `Outdated.hs` module should probably be
removed.

cabal-install/cabal-install.cabal

@@ -158,6 +158,7 @@ library
         Distribution.Client.ManpageFlags
         Distribution.Client.Nix
         Distribution.Client.NixStyleOptions
+        Distribution.Client.Outdated
         Distribution.Client.PackageHash
         Distribution.Client.ParseUtils
         Distribution.Client.ProjectBuilding

cabal-install/src/Distribution/Client/Main.hs

@@ -137,6 +137,7 @@ import qualified Distribution.Client.CmdRun as CmdRun
 import qualified Distribution.Client.CmdSdist as CmdSdist
 import qualified Distribution.Client.CmdTest as CmdTest
 import qualified Distribution.Client.CmdUpdate as CmdUpdate
+import qualified Distribution.Client.Outdated as Outdated
 
 import Distribution.Client.Check as Check (check)
 import Distribution.Client.Configure (configure, writeConfigFlags)

cabal-install/src/Distribution/Client/CmdOutdated.hs → cabal-install/src/Distribution/Client/Outdated.hs

@@ -13,7 +13,7 @@
 --
 -- Implementation of the 'outdated' command. Checks for outdated
 -- dependencies in the package description file or freeze file.
-module Distribution.Client.CmdOutdated
+module Distribution.Client.Outdated
   ( outdatedCommand
   , outdatedAction
   , ListOutdatedSettings (..)