Fl_Tabs::value() is now const as described in the documentation (STR #1379)

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5319 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,7 @@
 CHANGES IN FLTK 1.1.8
 
+	- Fl_Tabs::value() is now "const" as described in the 
+	  documentation (STR #1379)
 	- FLUID now only writes definitions of "o" and "w"
 	  variables as needed, reducing the number of "variable
 	  is shadowed" warnings from GCC.

FL/Fl_Tabs.H

@@ -42,7 +42,7 @@ protected:
 
 public:
   int handle(int);
-  Fl_Widget *value();
+  Fl_Widget *value() const;
   int value(Fl_Widget *);
   Fl_Widget *push() const {return push_;}
   int push(Fl_Widget *);

src/Fl_Tabs.cxx

@@ -231,7 +231,7 @@ int Fl_Tabs::push(Fl_Widget *o) {
 // are visible) and this also hides any other children.
 // This allows the tabs to be deleted, moved to other groups, and
 // show()/hide() called without it screwing up.
-Fl_Widget* Fl_Tabs::value() {
+Fl_Widget* Fl_Tabs::value() const {
   Fl_Widget* v = 0;
   Fl_Widget*const* a = array();
   for (int i=children(); i--;) {