[orca-list] The next batch of unstable goodness is here! (Caret-moved events)

[Joanmarie Diggs <jdiggs igalia com>]

Hey all.

I have just cleaned up the Gecko script's handling of caret-moved
events. As usual, I have tested a bunch and nothing is jumping out at me
as being working before but broken now. Your testing would be greatly
appreciated.

The two things you are looking for in particular are:
1. Looping back to a previous location where we were not looping back
   before the change
2. Failing to present a new location when we were presenting it before
   the change

Note that there are many cases that cause #1 to happen, only one of
which is our response to a caret-moved event. Others, like not being
able to correctly locate the next line, is still on my to-fix list. (And
something I plan to tackle next.)

Thanks guys!
--joanie