Parse an URI but allows to keep intact the original
       fragments.  URI-reference = URI / relative-ref

def parseURIRaw(str, raw):
    """Parse an URI but allows to keep intact the original
       fragments.  URI-reference = URI / relative-ref """
    ret = libxml2mod.xmlParseURIRaw(str, raw)
    if ret is None:raise uriError('xmlParseURIRaw() failed')
    return URI(_obj=ret)