Convert RenderUnitSpinner -> RenderUnit + WithSpinner.

Also sets correct offsets for the units that use it.

mods/ra/rules/vehicles.yaml

@@ -501,8 +501,9 @@ MGG:
 		Speed: 6
 	RevealsShroud:
 		Range: 6
-	RenderUnitSpinner:
-		Offset: 0,6
+	RenderUnit:
+	WithSpinner:
+		Offset: -299,0,171
 	AttackMove:
 		JustMove: yes
 	CreatesShroud:
@@ -546,8 +547,9 @@ MRJ:
 		Speed: 6
 	RevealsShroud:
 		Range: 6
-	RenderUnitSpinner:
-		Offset: 0,6
+	RenderUnit:
+	WithSpinner:
+		Offset: -256,0,256
 	AttackMove:
 		JustMove: yes
 	Explodes:
@@ -649,7 +651,8 @@ TTNK:
 		Weapon: TTankZap
 		LocalOffset: 0,0,213
 	AttackFrontal:
-	RenderUnitSpinner:
+	RenderUnit:
+	WithSpinner:
 	Selectable:
 		Bounds: 28,28,0,0
 	AutoTarget: