[orca-list] Minimum at-spi2 version is now 2.3.5 for master

[Joanmarie Diggs <jdiggs igalia com>]

Hey guys.

I have just committed a change to master which causes us to use dbus
rather than gsettings to see whether or not accessibility support and
screen reader are enabled or not. This change will make us play much
more nicely in non-GNOME desktop environments -- even more so when those
other environments also use the dbus keys in question because then Orca
will be able to automatically enable support in them. (This is so cool!)

In order for this to work, however, you will need the shiny new at-spi2
because Mike Gorse added what we needed and fixed a related bug to
ensure this all works as expected. (Thanks Mike!!) As a result, if you
attempt to build Orca from master and do not have the latest at-spi2
(version 2.3.5) you will get a configure error and not be able to build
Orca until you upgrade at-spi2. The good news is that I'm pretty darned
sure that any environment in which you can build Orca from master has
everything you need to build at-spi2, so this should at most an
inconvenience.

Take care.
--joanie