better blogger API and metaWeblogAPI support

Hi!

To make Ecto running <http://www.kung-foo.tv/ecto/> with PyDS, I just
checked in several patches to the blogger API and metaWeblogAPI modules.
I am not there, yet, there seem to be problems with regard to category
fetching. Don't know wether I get there for 0.7.0, but the current
version already has better API support than previous versions.

What _is_ working is RSD support in PyDS. It now renders a rsd.xml file
with the relevant info from your configuration so that Ecto just needs
your blogs base URL to find all relevant API informations. To get your
rsd.xml file, you need to just refresh some blog post that's on your
homepage, so your /index.html is rerendered. As soon as the tool with
level 0 renders it's index.html (that is stored as /index.html for your
blog), the rsd.xml file will be created, too.

bye, Georg