* void is moved to ikarus.singular-objects

* removed:
    src/ikarus.void.ss

src/ikarus.singular-objects.ss

@@ -1,10 +1,13 @@
 
 (library (ikarus singular-objects)
-  (export base-rtd eof-object)
+  (export base-rtd eof-object void)
   (import 
     (rename (ikarus system $records) (base-rtd sys:base-rtd))
-    (rename (ikarus) (eof-object sys:eof-object)))
+    (rename (ikarus)
+            (void sys:void)
+            (eof-object sys:eof-object)))
 
+  (define (void) (sys:void))
   (define (eof-object) (sys:eof-object))
   (define (base-rtd) (sys:base-rtd)))
 

src/ikarus.void.ss

@@ -1,6 +0,0 @@
-
-(library (ikarus void)
-  (export void)
-  (import (rename (ikarus) (void sys:void)))
-  (define (void) (sys:void)))
-

src/makefile.ss

@@ -26,7 +26,6 @@
       "ikarus.multiple-values.ss"
       "ikarus.control.ss"
       "ikarus.collect.ss"
-      "ikarus.void.ss"
       "ikarus.apply.ss"
       "ikarus.predicates.ss"
       "ikarus.pairs.ss"