New feature: guns can now be fed externally

- a machinegun can be fed by another emc if he has an ammo blet in his hands
- a merc can also feed his gun with ammo belts in his inventory
- the necessary tags can be set in Items.xml in the <ItemFlag> -tag
- this feature can be turned on and off via the JA2_Options.iniReader
- for more info, see http://www.bears-pit.com/board/ubbthreads.php/topics/307574/New_feature_Externally_fed_mac.html#Post307574
- this feature requires the newest GameDir files, as a new face icon was added

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@5415 3b4a5df2-a311-0410-b5c6-a8a6f20db521

GameSettings.h

@@ -1135,6 +1135,9 @@ typedef struct
 	// Flugente: Scope Modes
 	BOOLEAN fScopeModes;							// allow the player to toggle between existing scopes/sights
 	BOOLEAN fDisplayScopeModes;						// allow display of scope modes
+
+	// Flugente: External Feeding
+	UINT8	ubExternalFeeding;						// allow external feeding of guns (0 = no, 1 = only for others, 2 = we can also fed ourselves)
 	
 	BOOLEAN gBriefingRoom;
 	BOOLEAN gEncyclopedia;