add warning about fltk 1.1.7

Fltk/GUI.cpp

-// $Id: GUI.cpp,v 1.490 2006-02-24 03:28:18 geuzaine Exp $
+// $Id: GUI.cpp,v 1.491 2006-03-08 15:43:15 geuzaine Exp $
 //
 // Copyright (C) 1997-2006 C. Geuzaine, J.-F. Remacle
 //
@@ -134,6 +134,13 @@ Fl_Menu_Item m_menubar_table[] = {
 // menu window; removed File->Quit)
 
 #if defined(__APPLE__) && defined(HAVE_FLTK_1_1_5_OR_ABOVE)
+
+// random changes in fltk are driving me nuts sometimes
+#if (FL_MAJOR_VERSION == 1) && (FL_MINOR_VERSION == 1) && (FL_PATCH_VERSION <= 6)
+#undef FL_META
+#define FL_META FL_CTRL
+#endif
+
 Fl_Menu_Item m_sys_menubar_table[] = {
   {"File", 0, 0, 0, FL_SUBMENU},
     {"New...",     FL_META+'n', (Fl_Callback *)file_new_cb, 0},

README

@@ -15,6 +15,13 @@ support; freely available from http://www.fltk.org). You can use the
 the FLTK_PREFIX and GSL_PREFIX environment variables) if the libraries
 are not installed in their default locations.
 
+[ WARNING: Do not use FLTK 1.1.7. FLTK 1.1.7 has a few serious bugs
+that can lead to seemingly random crashes in Gmsh. FLTK 1.1.6 is OK,
+as are most SVN revisions anterior to {"2005-10-10"}. Unfortunately,
+these versions come with a buggy JPEG header: if you enable the local
+JPEG library when you configure FLTK, you will have to remove the
+"#include <config.h>" line in the file "jconfig.h". ]
+
 To install a non-graphical version of Gmsh (that does not require FLTK
 nor OpenGL), type