nsIWidget, getNativeData(NS_NATIVE_WINDOW), and window handles

Hello all,
The testing tool that we are developing relied on
nsIWidget::getNativeData(NS_NATIVE_WINDOW) to get the window handle of the
browser and heavy weight controls (runs on win/solaris/linux). This worked
as of Netscape 7.0 (Moz1.0). When 7.01 (Moz1.0.2) came out this
functionallity "broke". getNativeData returns null no matter what propery is
queried for. Granted, this is internal use api, but there does not appear to
be any other way to do this. Does any one have any idea what happened, a way
to get around it, or another approach to getting native window handles?
Also, does any one know if the 1.0.2 source is available? I do not use
CVS... I have just been getting the tarred source but can only find 1.0.1
(which works) and not 1.0.2.
Thanks a lot.
-john