domxml memleak patches into PHP_4_3?

Hi (Mainly) Rob Richards and (just a tiny little bit) me were hunting down some domxml memleaks (and Rob implemented DomDocument->free() method. Hooray ;) ). As we are rather late in the release process of PHP 4.3.2, I'm not sure, if it's wise to commit them now to the PHP_4_3 branch or if I should wait until after this release. Furthermore, the DomDocument->free() method was a much asked feature for domxml (and it really helps saving memory, if you want to process a lot of XML-Documents in one run). Would it be totally against the release rule if I add that function after 4.3.2 is released to the PHP_4_3 branch? Anyway, the diff file (against ext/domxml HEAD, not PHP_4_3 for the time being) can be found at http://trash.chregu.tv/domxml.memleak.diff, if anyone wants to use/test it right now chregu