Implemented Change Settings under Unix. We are gradually getting there.

[originally from svn r3092]

unix/unix.h

@@ -59,6 +59,7 @@ long get_windowid(void *frontend);
 void *get_window(void *frontend);      /* void * to avoid depending on gtk.h */
 
 /* Things pterm.c needs from gtkdlg.c */
+int do_config_box(const char *title, Config *cfg, int midsession);
 void fatal_message_box(void *window, char *msg);
 void about_box(void *window);
 void *eventlogstuff_new(void);