Fixed missing #ifndef FL_DOXYGEN which was causing duplicate entries in FNFC docs.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7008 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Native_File_Chooser_MAC.H

@@ -26,6 +26,8 @@
 //     http://www.fltk.org/str.php
 //
 
+#ifndef FL_DOXYGEN		// PREVENT DOXYGEN'S USE OF THIS FILE
+
 // OSX-SPECIFIC NATIVE BROWSER
 #ifdef __APPLE_CC__
 #include <Carbon/Carbon.h>
@@ -155,6 +157,8 @@ public:
   int show();
 };
 
+#endif /*!FL_DOXYGEN*/
+
 //
 // End of "$Id$".
 //