New feature: food system requires mercs to eat and drink in order to survive

- food and water levels are lowered every hour, eat food to survive
- not doing so leads to various penalties and ultimately death
- added food items for that purpose. Food can degrade over time. Rotten food poisons.
- Mercs automatically consume food if hungry/thirsty and food is in their inventories
- for more info, see http://www.bears-pit.com/board/ubbthreads.php/topics/307396/Re_Mercs_need_food_and_water_t.html#Post307396
- this feature requires new STI files from the GameDir trunk.

- added a bunch of filler variable to the soldier type, so hopefully savegame compatibility can be maintained easier in the future.

WARNING: This will break savegame compatibility

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@5411 3b4a5df2-a311-0410-b5c6-a8a6f20db521

Tactical/XML.h

@@ -66,6 +66,7 @@ typedef PARSE_STAGE;
 #define	ARMOURSFILENAME							"Armours.xml"
 #define	EXPLOSIVESFILENAME						"Explosives.xml"
 #define DRUGSFILENAME							"Drugs.xml"
+#define FOODFILENAME							"Food.xml"
 #define	AMMOFILENAME							"AmmoStrings.xml"
 #define	AMMOTYPESFILENAME						"AmmoTypes.xml"
 #define	INCOMPATIBLEATTACHMENTSFILENAME			"IncompatibleAttachments.xml"
@@ -301,6 +302,10 @@ extern BOOLEAN WriteExplosiveStats();
 extern BOOLEAN ReadInDrugsStats(STR fileName);
 extern BOOLEAN WriteDrugsStats();
 
+// Flugente: food
+extern BOOLEAN ReadInFoodStats(STR fileName);
+extern BOOLEAN WriteFoodStats();
+
 extern BOOLEAN ReadInAmmoStats(STR fileName);
 extern BOOLEAN WriteAmmoStats();