added rescan() in show() (necessary since fltk 1.1.7)

Fltk/File_Picker.h

@@ -43,6 +43,7 @@ public:
   void show(){
     if(_win){
       _win->show();
+      rescan(); // necessary since fltk 1.1.7
       if(_in)
 	_in->take_focus();
       else

benchmarks/bugs/fx79w151a.geo

 
 // This works great on my Mac (with clscale = 1, 0.9, 0.7, 0.6, 0.5); fails with 0.8
 
+// OK too gmsh fx79w151a.geo -clscale 0.3 -rand 1.e-5
+//        gmsh fx79w151a.geo -clscale 0.2 -rand 1.e-6
+
+
 // fails miserably with clscale = 1 on Linux, but works for clscale 0.9 and 0.5
 
 // Gmesh input File created by Gmeshgen.pl