Add mappings to what-cursor-position for ga and g8

[Nikolai Weibull]

Hi!

So I did another small merge request:

https://gitorious.org/evil/evil/merge_requests/2

It adds mappings to what-cursor-position for ga and g8.  These
commands are different in Vim, and perhaps g8 should run
what-cursor-position with a numeric argument.  What do you think?

I don’t really know what to think of merge requests.  It doesn’t feel
like they’re a lot easier to do than using format-patch.  And you
don’t easily get the same discussion around them that you would on the
mailing list.