patch for ISO8859-9 support

[Allin C. <cot...@wf...>]

I've just submitted a patch that adds support for ISO8859-9.  This 
should be useful for people producing PostScript output with 
Turkish titles.

set encoding iso_8859_9
set term post eps
set title "<Turkish text>" ...

-- 
Allin Cottrell
Department of Economics
Wake Forest University, NC