Added header vs. library version check to configure,

Fixed problem in wxTreeCtrl when nothing was selected
   upon startup and tabbing into it crashed.
 I understood now what filterindex in file dialog means.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4582 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

configure.in

@@ -49,6 +49,7 @@ dnl checks the results of gtk-config to some extent)
 dnl
     AC_TRY_RUN([
 #include <gtk/gtk.h>
+#include <gtk/gtkfeatures.h>
 #include <stdio.h>
 
 int
@@ -61,6 +62,13 @@ main ()
      exit(1);
    }
 
+   if ((GTK_MAJOR_VERSION != gtk_major_version) ||
+       (GTK_MINOR_VERSION != gtk_minor_version) ||
+       (GTK_MICRO_VERSION != gtk_micro_version)) {
+     printf("Headers vs. library version mismatch!\n");
+     exit(1);
+   }
+
    if (gtk_minor_version == 1) return FALSE;
 
    return !((gtk_major_version > major) ||