XMLRPC not completely fixed.

There are still a couple of issues with the XMLRPC interface.

ecto seems to work nearly fine. It publishes posts without escaping, and allows for the setting of categories. This is with MetaWeblog API as the account type.
Performancing publishes wrong unless using MetaWeblog API, but even when doing this, categories are not set.
Flock appears to be the same as Performancing, when set to Wordpress, or MetaWeblog API.
Qumana is the same - it autodetects it’s a Wordpress blog.
MarsEdit - works, but presents an error message.

Thanks to kreaper, who’s been a big help in the testing. Anyone with any other results can leave a comment.