STR 2639 Fixes Fl_Pack resize behaviour

FLUID cleanups
FLUID Fl_Pack support improvement
FLUID fix error in handling live mode resizables

FL/Fl_Pack.H

@@ -65,16 +65,19 @@ protected:
 
 public:
   Fl_Pack(int X, int Y, int W, int H, const char *L = 0);
+
   /**
     Gets the number of extra pixels of blank space that are added
     between the children.
   */
   int spacing() const {return spacing_;}
+
   /**
     Sets the number of extra pixels of blank space that are added
     between the children.
   */
   void spacing(int i) {spacing_ = i;}
+
   /** Returns non-zero if Fl_Pack alignment is horizontal.
 
     \returns non-zero if Fl_Pack alignment is horizontal (Fl_Pack::HORIZONTAL)
@@ -88,6 +91,8 @@ public:
     See class Fl_Pack documentation for details.
   */
   uchar horizontal() const {return type();}
+
+  void resize(int X, int Y, int W, int H) FL_OVERRIDE;
 };
 
 #endif