Compile without wxUSE_UNICODE

[Olly Betts]

On Thu, Jan 05, 2012 at 09:01:09PM +0000, Olaf Kähler wrote:
> Please find a jolly little patch as an attachment that allows compiling
> aven without wxUSE_UNICODE.

Thanks, but the list strips most attachment types and the patch didn't
make it through.  I've attempted to tell it to allow text/x-diff and
text/x-patch in future, so hopefully it'll work now, but feel free to
send it direct to me, or stick it in trac.

Cheers,
    Olly