Updates to a number of apps to remove warnings/compile errors under libc5.

Tested under both libc5 and libc6 and all seems well with these fixes.
 -Erik

coreutils/uuencode.c

@@ -240,5 +240,5 @@ int uuencode_main (int argc,
     errorMsg("Write error\n");
     exit FALSE;
   }
-  exit TRUE;
+  return( TRUE);
 }