Description:
------------
SimpleXML seems to ignore/remove line breaks (\n) in the attributes. Line breaks 
inside an attribute are valid XML, but they're lost when you use SimpleXML to read 
the XML data.

I encountered this problem when reading XML data provided by the Google Webmaster 
Tools API

Test script:
---------------
XML:
<?xml version="1.0"?>
<feed><entry description="this is the first line
here's a second line
and another!" /></feed>

PHP:
$xml = simplexml_load_string($xmldata);
foreach ($xml->entry as $entry)
{
$attributes = $entry->attributes();
print_r($attributes);
}

Expected result:
----------------
Keep the line breaks from the attribute values after reading the string.
$attributes['description'] == "this is the first line
here's a second line
and another!";

Actual result:
--------------
The string no longer contains line breaks:
$attributes['description'] == "this is the first line here's a second line and 
another!";