throw out "zoomed" tapes. These drew 60% of the scale with bullets rather

than tick marks, and looser (zoomed) than the other 40%. Rationale:

- this was only used in *one* tape of *one* HUD ("custom")
- it's not in the MIL-STD!
- doesn't seem very useful
- relies on integer scale values, while we now have float values in the new HUD

This feature would have had to be rewritten anyway. If someone needs it and
can come forward with a (MIL-)STD description, then it can be added to the
existing tape generator again (using a value->screen-position mapper function).
Otherwise it's simply declared dead.

(Yay, one TODO and a few FIXMEs less.  ;-)

src/Instrumentation/HUD/HUD.hxx

@@ -416,8 +416,9 @@ public:
     virtual void draw();
 
 protected:
+    void draw_vertical(float);
+    void draw_horizontal(float);
     void draw_fixed_pointer(float, float, float, float, float, float);
-    void zoomed_scale(int, int);
     char *format_value(float);
 
 private:
@@ -436,7 +437,8 @@ private:
     bool   _pointer;
     Format _label_fmt;
     string _format;
-    int    _zoom;
+    int    _div_ratio;          // _major_divs/_minor_divs
+    bool   _odd_type;           // whether to put numbers at 0/2/4 or 1/3/5
 
     enum { BUFSIZE = 64 };
     char   _buf[BUFSIZE];