[orca-list] Please test master for window-related issues

[Joanmarie Diggs <jdiggs igalia com>]

Hey all.

I just changed Orca's behavior regarding cache clearing of windows in
the hopes that it will improve overall performance. Of course, that
change means that apps and/or toolkits whose windows fail to emit the
correct accessibility events may now be broken. Hopefully those issues
have been fixed since the original hack was put into place. But just in
case, some ongoing testing of Orca master would be appreciated.

Thanks!
--joanie