gtk_main_iteration and friends return val

[Kevin Ryde <user42@zip.com.au>]

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I'd like to propose

        * gtk-1.2.defs (gtk_main_iteration, gtk_main_iteration_do, gtk_true,
        gtk_false, gtk_events_pending): Make returns #t/#f.

Currently these return integers to scheme, but I think they're all
just TRUE or FALSE at the C level and might be better as #t/#f.

In gtk 1.2 the C return types are gint, but in 2.2 this seems to have
been corrected to gboolean.

Hopefully no-one has used gtk-events-pending thinking it was a count
of pending events or something, which it's not.


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--- gtk-1.2.defs.~1.7.~	2003-01-23 07:16:45.000000000 +1000
+++ gtk-1.2.defs	2003-02-06 10:00:28.000000000 +1000
@@ -362,23 +362,23 @@
   ())
 
 (define-func gtk_main_iteration
-  int
+  bool
   ())
 
 (define-func gtk_main_iteration_do
-  int
+  bool
   ((bool val)))
 
 (define-func gtk_true
-  int
+  bool
   ())
 
 (define-func gtk_false
-  int
+  bool
   ())
 
 (define-func gtk_events_pending
-  int
+  bool
   ())
 
 (define-func gtk_timeout_add_full