[packagekit] Backend unicode improvements

[Richard Hughes]

On Sun, 2008-03-16 at 18:37 -0400, Luke Macken wrote:
> Attached is patch that attempts to cleans up a lot of the unicode mess
> in the yum/yum2 backends.

Dude, it looks like you know faaaaar more about this stuff than me, so
if it works I guess it's good to merge. Thanks.

I'll be planning a release again on Friday so we'll have a whole week to
repair any breakage.

Richard.