New Feature: 2 new Iron Man game modes (by anv)

- Selectable at campaign start under "Extra Difficulty" label
- Soft Iron Man: No saving when in turn-based combat. Can save with enemies around (in sector) but only if still in real-time mode.
- Extreme Iron Man: No saving, except punctually at midnight - save screen opens by itself, so Player won't accidentally miss saving time window. Besides Player's save, game will be auto-saved at midnight too if auto-saving is on.
- New ja2_options.ini values for Extreme Iron Man setting: EXTREME_IRON_MAN_SAVING_TIME_NOTIFICATION, 


git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@7167 3b4a5df2-a311-0410-b5c6-a8a6f20db521

GameSettings.h

@@ -238,9 +238,11 @@ typedef struct
 	BOOLEAN fImprovedInterruptSystem;	// ubFiller:	From 498 to 497
 	BOOLEAN fBackGround;				// ubFiller:	From 497 to 496
 	BOOLEAN fFoodSystem;				// ubFiler:		From 496 to 495
+
+	UINT8	ubIronManMode;				// ubFiler:		From 495 to 494
 	
 	// WANNE: Decrease this filler by 1, for each new UINT8 / BOOLEAN variable, so we can maintain savegame compatibility!!
-	UINT8	ubFiller[495];		
+	UINT8	ubFiller[494];		
 
 } GAME_OPTIONS;
 
@@ -1439,6 +1441,10 @@ typedef struct
 	BOOLEAN fHelicopterReturnToBaseIsNotFree;
 	BOOLEAN fPaySkyriderInBase;
 
+	// anv: new iron man modes
+	UINT8 ubExtremeIronManSavingTimeNotification;
+	UINT8 ubExtremeIronManSavingHour;
+
 } GAME_EXTERNAL_OPTIONS;
 
 typedef struct