[orca-list] Don't use the Firefox trunk build from 4th August or later for now

[Joanmarie Diggs <joanmarie diggs gmail com>]

Hi Folks.

The Firefox a11y team recently fixed a bug that badly needed fixing 
(yea!!).  Unfortunately, we have just discovered a significant side 
effect in their fix and it's not one that we can "hack around."  So, for 
now, the safest "latest greatest" Firefox trunk build seems to be the 
one from 3rd August.  When that changes, we'll let you know.  If you 
prefer to track the issue yourself, our tracking bug can be found here: 
http://bugzilla.gnome.org/show_bug.cgi?id=463783.  The Mozilla bug can 
be found here: https://bugzilla.mozilla.org/show_bug.cgi?id=391023.

Take care.
Joanie