- new option: ENEMY_JAMS in [Tactical Gameplay Settings] allows enemy gun jams

- take into account unjam AP cost for jammed weapon
- improved AI_BETTER_COVER option

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@8409 3b4a5df2-a311-0410-b5c6-a8a6f20db521

GameSettings.h

@@ -556,6 +556,9 @@ typedef struct
 	// Moa - weight of filled backpack lowers our AP
 	BOOLEAN	fBackPackWeightLowersAP;
 
+	// sevenfm: enemy gun jams
+	BOOLEAN fEnemyJams;
+
 	// WDS - Improve Tony's and Devin's inventory like BR's
 	// silversurfer: not used anymore, see "Tactical\XML_Merchants.cpp" for "useBRSetting"
 	// BOOLEAN tonyUsesBRSetting;