Description:
------------
When generating childs of an element with a default namespace  using DOMDocument->createElement() the namespace of the childs won't be set to the correct value.

Reloading the DOMDocument using saveXML() and loadXML() fixes the Problem.

Reproduce code:
---------------
$xml = new DOMDocument("1.0","UTF-8");
$foo = $xml->createElementNS('urn:foo','foo');
$xml->appendChild($foo);
$bar = $xml->createELement('bar','Bar using default namespace');
$foo->appendChild($bar);
/* results in
<foo xmlns="urn:foo"><bar>Bar using default namespace</bar></foo>
*/

$xsl = DOMDocument::Load('test.xsl');
$xslt = new xsltProcessor();
$xslt->importStylesheet($xsl);

print($xslt->transformToXML($xml));

print("\n\nReload DOM\n");
$xml = DOMDocument::LoadXML($xml->saveXML());
print($xslt->transformToXML($xml));

-----------test.xsl-------------
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" 
	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
	xmlns:foo="urn:foo"
>
<xsl:output method="text" omit-xml-declaration = "yes"/>
<xsl:template match="foo:foo">
foo:bars:<xsl:apply-templates select="foo:bar"/>
bars:<xsl:apply-templates select="bar"/>
</xsl:template>

<xsl:template match="*">
	- <xsl:value-of select="."/>
</xsl:template>

</xsl:stylesheet>


Expected result:
----------------
foo:bars:
	- Bar using default namespace
bars:

Reload DOM

foo:bars:
	- Bar using default namespace
bars:

Actual result:
--------------
foo:bars:
bars:
	- Bar using default namespace

Reload DOM

foo:bars:
	- Bar using default namespace
bars: