Rename symbols using Ruby as a reference

include/global.h

@@ -453,7 +453,7 @@ struct MauvilleManStoryteller
     u8 gameStatIDs[4];
     u8 trainerNames[4][7];
     u8 statValues[4][4];
-    u8 unk34[4];
+    u8 language[4];
 };
 
 struct MauvilleManGiddy
@@ -477,9 +477,9 @@ struct MauvilleOldManTrader
 {
     u8 unk0;
     u8 unk1[4];
-    u8 unk5[4][11];
+    u8 playerNames[4][11];
     u8 unk31;
-    u8 unk32[4];
+    u8 language[4];
 };
 
 typedef union OldMan

include/mauville_old_man.h

@@ -12,7 +12,8 @@ enum MauvilleOldManType
 };
 
 void SetMauvilleOldMan(void);
-u8 sub_81201C8(void);
-extern struct BardSong gUnknown_03006130;
+u8 GetCurrentMauvilleOldMan(void);
+extern struct BardSong gBardSong;
+void ScrSpecial_SetMauvilleOldManMapObjGfx(void);
 
 #endif // GUARD_MAUVILLE_OLD_MAN_H

include/trader.h

@@ -7,5 +7,7 @@
 
 void sub_8133DA0(u8 taskId);
 void sub_8133E1C(u8 taskId);
+void sub_81339F8(void);
+void Trader_ResetFlag(void);
 
 #endif //GUARD_TRADER_H