[w3m-dev 03939] next/prev visited link

* funcname.tab (NEXT_VISITED): added
	(PREV_VISITED): added
* main.c (_nextA): added
	(_prevA): added
	(nextVA): added
	(prevVA): added
* proto.h (nextVA): added
	(prevVA): added
* doc/README.func (NEXT_VISITED): added
	(PREV_VISITED): added
* doc-jp/README.func (NEXT_VISITED): added
	(PREV_VISITED): added
* NEWS: func: NEXT_VISITED, PREV_VISITED
From: Yoshinobu Sakane <sakane@d4.bsd.nes.nec.co.jp>

funcname.tab

@@ -1,4 +1,4 @@
-# $Id: funcname.tab,v 1.20 2003/01/23 18:37:21 ukai Exp $
+# $Id: funcname.tab,v 1.21 2003/07/22 17:24:49 ukai Exp $
 # macro name	function name
 #----------------------------
 @@@		nulcmd
@@ -147,3 +147,5 @@ VIEW_BOOKMARK	ldBmark
 VIEW_IMAGE	followI
 WHEREIS		srchfor
 WRAP_TOGGLE	wrapToggle
+NEXT_VISITED    nextVA
+PREV_VISITED    prevVA