Require at-spi-python
It's needed for the orbit a11y stack. The new d-bus stack
apparently isn't working too well right now:
http://lists.fedoraproject.org/pipermail/desktop/2010-October/006568.html
Regarding orca not reading the contents of windows, etc (what leads to
orca only announcing key presses) I have a sort of solution.
Before saying what I needed to do, this fix will make orca still use
at-spi over corba. I know that the intention was to have fedora 14 use
at-spi over dbus but as time is running out, I have been unable to find
a solution using at-spi over dbus and there shouldn't be any difference
to the user at the moment (if anything at-spi-corba is more likely to be
reliable as at-spi-dbus is in early days), it may be worth considering
this so we at least have a working orca.