Include iosfwd instead of iostream, since it is smaller; from Marc Espie.

usr.bin/lex/flex.skl

@@ -1,7 +1,7 @@
 /* A lexical scanner generated by flex */
 
 /* Scanner skeleton version:
- * $NetBSD: flex.skl,v 1.19 2003/12/02 06:22:14 lukem Exp $
+ * $NetBSD: flex.skl,v 1.20 2004/02/01 21:24:02 christos Exp $
  */
 
 #define FLEX_SCANNER
@@ -25,7 +25,7 @@
 
 #include <stdlib.h>
 %+
-#include <iostream>
+#include <iosfwd>
 %*
 #include <unistd.h>