Two patches.

    patch_precompiled_sets.c for adding simple support of chinese Big5.
	Under LC_ALL=en_US.ISO8859-1,
	Chinese Big5 can be displayed well if elm treat it as ISO8859-1, that is, no treatment.
	This patch fails to work if the user specifies LC_ALL=zh_TW.Big5, 
	but elm cannot display very well in zh_TW.Big5.

	patch_hdrdecode.c:
	Many MUAs send encoded From:, To:, and Subject: with double quotes, 
	but elm just pass them undecoded.

	For example,
	From: pasear  "=?big5?B?qay//Lq4?="  <wchunhao@csie.nctu.edu.tw>
	To: pasear =?Big5?B?qay//Lq4?= <wchunhao@csie.nctu.edu.tw>
	Subject: abc""=?Big5?B?UmU6IKuixW9+?="def

	The To: works well, 
	but it cannot decode From:, where it is very common to quote encoded text.
	The Subject: line should also be decoded with prefix and postfix string intact, 
	though this usage is not common.

	Most users just thought elm cannot handle Chinese big5 when they see the undecoded
	text.

How-To-Repeat: 
    Copy the following mail to /var/mail/$USER, and run elm.


    From wchunhao@ccbsd12.csie.nctu.edu.tw Sat Sep  9 23:55:57 2006
    Received: from ccbsd12.csie.nctu.edu.tw (wchunhao@ccbsd12.csie.nctu.edu.tw [140.113.209.72])
	    by mailgate.csie.nctu.edu.tw (8.13.4/8.13.4) with ESMTP id k89FtuXe013926
		    for <wchunhao@csie.nctu.edu.tw>; Sat, 9 Sep 2006 23:55:56 +0800 (CST)
			    (envelope-from wchunhao@ccbsd12.csie.nctu.edu.tw)
	Received: (from wchunhao@localhost)
	    by ccbsd12.csie.nctu.edu.tw (8.13.6/8.13.6/Submit) id k89Ftvtd090499
		    for wchunhao@csie.nctu.edu.tw; Sat, 9 Sep 2006 23:55:57 +0800 (CST)
			    (envelope-from wchunhao)
	Date: Sat, 9 Sep 2006 23:55:57 +0800
	From: pasear  "=?big5?B?qay//Lq4?="  <wchunhao@csie.nctu.edu.tw>
	To: pasear ""=?Big5?B?qay//Lq4?="" <wchunhao@csie.nctu.edu.tw>
	Subject: abc""=?Big5?B?UmU6IKuixW9+?="def
	Message-ID: <20060909155557.GA90491@csie.nctu.edu.tw>
	MIME-Version: 1.0
	Content-Type: text/plain; charset=Big5
	Content-Disposition: inline
	Content-Transfer-Encoding: 8bit
	User-Agent: Mutt/1.5.12-2006-07-14
	Status: RO

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