Description:
------------
umlaut characters in charset utf-8 get not correct en/decoded with wddx_serialize_value resp. wddx_deserialize.

in php-5 the code with the xml-header and utf-8 encoding returns the iso-8859-1 chars and not the utf-8 charts - that is a bug too, or?

Reproduce code:
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<?php
	header( 'Content-Type: text/html; charset=UTF-8' );
	echo '<pre>';
	$original = utf8_encode( 'umlaute: '.chr( 220 ).chr( 228 ).chr( 246 ).chr( 223 ) );
	var_dump( $original );
	$wddx = wddx_serialize_value( $original );
	#var_dump( htmlentities( $wddx ) );
	$data = wddx_deserialize( $wddx );
	var_dump(  $data );
	$data = wddx_deserialize( '<?xml version="1.0" encoding="UTF-8" ?>'."\n".$wddx );
	var_dump(  $data );
?>

Expected result:
----------------
string(17) "umlaute: ????"
string(17) "umlaute: ????"
string(17) "umlaute: ????"

Actual result:
--------------
string(17) "umlaute: ????"
string(17) "umlaute: ????"
string(17) "umlaute: ????"