[GCC-XML] Applying attributes

[Chris Waldron]

According to the documentation I should be able to apply an attribute to
a class.  However when I apply an attribute to a class GCC-XML is
failing to include the "attribute" attribute to the class element.  For
example I defined the following:

#ifdef __GCCXML__
#define GUID(x) __attribute((gccxml("guid", #x)))
#else
#define GUID(x)
#endif

GUID({BA0A9651-23E6-407a-B19C-5A0A05B97DC9})
class Rectangle : Object
{
public:
    Rectangle(void);
    virtual ~Rectangle(void);
}

The class element for the Rectangle class is missing the "attribute"
attribute.

Can someone take a look?

Thanks,
Chris