cnc: various balance changes, part 2

Infantry sight range +1 -- it seems that they have lower sight range than vehicles for some reason. See http://i.imgur.com/Z6nWG.jpg for infantry and vehicle, both with RevealsShroud: 5, but vehicle sees further. So, effectively 5 for infantry becomes 4, which seems reasonable.
Reduced probability of SpawnViceroid from 10% to 2%. 2% will still happen often enough if Chem Warriors are used predominantly, but with 10%, units were constantly turning to Viceroids, which was a pain. You could also send 10 infantry to opponent's tib field in early game and spawn a viceroid and kill their harvester or harass them.
Turned off units auto-targeting regular buildings, because often will attack silo over an obelisk or enemy unit. Auto-target should remain on for defensive towers/turrets, though.

mods/cnc/rules/defaults.yaml

@@ -94,7 +94,7 @@
 	Armor:
 		Type: None
 	RevealsShroud:
-		Range: 4
+		Range: 5
 	AutoTarget:
 		ScanRadius: 4
 	Mobile:
@@ -130,6 +130,7 @@
 	ActorLostNotification:
 		Notification: unitlost.aud
 	SpawnViceroid:
+		Probability: 2
 	CrushableInfantry:
 
 ^CivInfantry:
@@ -239,6 +240,7 @@
 		Notification: strclost.aud
 	EditorAppearance:
 		RelativeToTopLeft: yes
+	AutoTargetIgnore:
 	ShakeOnDeath:
 	Sellable:
 	Capturable: