Description:
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PHP is ignoring reference to namespaces when using DOM XML functions.

Reproduce code:
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$oXsl = domxml_open_file("test.xsl");

$ctx=xpath_new_context($oXsl); 
$ctx->xpath_register_ns("xsl","http://www.w3.org/1999/XSL/Transform");
$aoIncludeNodes = $oXsl->get_elements_by_tagname("xsl:include",$ctx);

print_r($aoIncludeNodes);

Expected result:
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Should produce array of all <xsl:include> nodes in the XSL.
This works OK on PHP4.3.2 on Windows.

Actual result:
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Empty array returned but will work if following line is used instead:

$aoIncludeNodes = $oXsl->get_elements_by_tagname("include",$ctx);