Fix bugs in helicopter code.

boot/helicopter_debug.ks

@@ -1 +1 @@
-runpath("0:/boot/rocket", true).
+runpath("0:/boot/helicopter", true).

init/helicopter.ks

@@ -23,7 +23,7 @@ local y is interface:AddVLayout().
 local x is y:AddHLayout().
 
 set x:AddButton("HOVER"):onClick to {
-  PointStabilizeH().
+  Hover().
 }.
 
 set x:AddButton("LAND"):onClick to {
@@ -35,7 +35,7 @@ set x:AddButton("LAND"):onClick to {
     toggle AG10.
     BRAKES on.
   }
-  PointStabilizeH(-5).
+  Hover(-5).
 }.
 
 interface:show().