Resource System: Fix output path for automatic savegame conversion

As of this commit, legacy savegames are now automatically converted
when the a new game is added, the saved session repository is updated
and the newly converted .save session packages are available from the
Ring Zero UI.

Also convert legacy Chex Quest and Hacx savegames.

doomsday/client/src/resource/resourcesystem.cpp

@@ -1922,6 +1922,9 @@ DENG2_PIMPL(ResourceSystem)
         if(gameId.beginsWith("doom"))    return ".dsg";
         if(gameId.beginsWith("heretic")) return ".hsg";
         if(gameId.beginsWith("hexen"))   return ".hxs";
+        if(gameId.beginsWith("doom"))    return ".dsg";
+        if(gameId.beginsWith("chex"))    return ".dsg";
+        if(gameId.beginsWith("hacx"))    return ".dsg";
         return "";
     }
 
@@ -1951,6 +1954,8 @@ DENG2_PIMPL(ResourceSystem)
         if(gameId.beginsWith("doom"))    return App::app().nativeHomePath() / "savegame" / gameId;
         if(gameId.beginsWith("heretic")) return App::app().nativeHomePath() / "savegame" / gameId;
         if(gameId.beginsWith("hexen"))   return App::app().nativeHomePath() / "hexndata" / gameId;
+        if(gameId.beginsWith("chex"))    return App::app().nativeHomePath() / "savegame" / gameId;
+        if(gameId.beginsWith("hacx"))    return App::app().nativeHomePath() / "savegame" / gameId;
 
         return "";
     }
@@ -1981,7 +1986,7 @@ DENG2_PIMPL(ResourceSystem)
     void convertLegacySavegame(String const &sourcePath, String const &gameId)
     {
         String const repoPath   = gameId / sourcePath.fileNameWithoutExtension();
-        String const outputPath = nativeSavePath / repoPath;
+        String const outputPath = nativeSavePath / gameId;
 
         // Attempt the conversion via a plugin (each is tried in turn.
         ddhook_savegame_convert_t parm;