Direction character on new progress bar

[John Arbash Meinel]

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The latest version of the progress bar displays all sorts of information:
[###################-] bzr+ssh >   6181kB     0kB/s | Running
post_commit hooks [bzr-email] - Stage

Of course, now the progress part takes up a lot of space, and pushes the
info part to have less-and-less detail. This isn't terrible, but I had
gotten used to seeing some of the object counts being shown, and I kind
of miss that.

Anyway, this is mostly about the new direction indicator. I'm not sure
if < vs > is super clear about which way is read and write. (Inspecting
the code > is reading.) Also, it seems like it would be better to put it
on near the B/s portion, since that is the part that it is indicating.
(It isn't saying we've uploaded a total of 5MB, just that the last 1kB/s
was a write.)

I don't have great suggestions, I just wanted to note that a couple bits
could probably be made a little better.

John
=:->

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