Improve handling of malformed object parameters.

When specifying source material for <object> tags, you must use
data inside the object tag as well as specify movie in a param.
If you specify a src (which is the appropriate markup for <embed>)
we now convert and fill in the other attributes appropriately.

Also, fix a PHP warning in Generator code.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>

library/HTMLPurifier/AttrTransform/SafeParam.php

@@ -37,6 +37,8 @@ class HTMLPurifier_AttrTransform_SafeParam extends HTMLPurifier_AttrTransform
                 $attr['value'] = 'window';
                 break;
             case 'movie':
+            case 'src':
+                $attr['name'] = "movie";
                 $attr['value'] = $this->uri->validate($attr['value'], $config, $context);
                 break;
             case 'flashvars':