NewPost and NewComment

Added support for adding new posts and comments.
EditComment and optional automatic EditComment call

Added support for EditComment as well as a second override to
NewComment. In most WordPress installations, anonymous comments over
XML-RPC are not allowed. This causes all new comments to be posted as
the username used to call NewComment. to fix this, either create a
WordPress plugin to allow anonymous comments (very bad), call the
NewComment with the optional boolean parameter at the end, or call
EditComment manually after calling NewComment.
Merge pull request #1 from furuknap/master

NewPost and NewComment