Remember to convert a post to wp format.

Also, return the post-id, to match create-post.
Refactor our org-blog-save function.

We couldn't handle both create and update with the same invocation
because they take different parameters, duh.
Clean up definition of testing function.

When rather than if, lets us do things as a prelude without having to
have a progn or the like.
Test updating.
Only prompt for password once during tests.
 org-blog-buffer-merge-post doesn't need to be interactive.
Don't worry with autoload yet.
Rename org-blog-choose-blog to org-blog-get-name.

Makes it clearer what it's doing.
To many changes to break out.
not-empty-string -> empty-string-is-nil.

Clearer in intent.
Give ourselves a better initial template.
Remember to make sure xml-rpc spews copiously while testing.
Clean up funcname calculation.
Make sure we have a chance to run afoul of TZ issues.
Fix how we're running ert.
The only reliable thing is to submit using GMT.

This means we need to do TZ math ourselves, but otherwise, since WP
doesn't send back values with TZ, things quickly get mangled.