Enhancement:

- SCROLL_SPEED_FACTOR in Ja2_Options.ini allows to modify scroll speed
- while reading MovementCosts.xml the game checks now for valid traversal type and asserts instead simply assigning type GROUNDBARRIER

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@8295 3b4a5df2-a311-0410-b5c6-a8a6f20db521

GameSettings.h

@@ -461,6 +461,7 @@ typedef struct
 	FLOAT giCreatureTurnSpeedUpFactor;
 	FLOAT giMilitiaTurnSpeedUpFactor;
 	FLOAT giCivilianTurnSpeedUpFactor;
+	FLOAT fScrollSpeedFactor;
 
 	//Sound settings
 	UINT32 guiWeaponSoundEffectsVolume;