[xml] empty CDATA sections

[Darin Adler <darin bentspoon com>]

Hi folks.

As you may know, WebKit currently uses libxml2 to handle XML  
documents, including XHTML. I recently discovered that a number of Ian  
Hickson's test cases that work fine in other browsers fail in browsers  
based on WebKit. That's because libxml2 discards empty CDATA sections.  
I filed this bug:

    http://bugzilla.gnome.org/show_bug.cgi?id=514181

And Mark Rowe attached a patch that resolves the issue.

Daniel pointed out that some clients of libxml2 may be depending on  
the current behavior; some may see this as a feature rather than a bug.

Does anyone have any comments, objections to this change perhaps or  
support for the change?

    -- Darin