* Rename inlinepage to depends, so that it can be used to refer to more

* Rename inlinepage to depends, so that it can be used to refer to more
  dependency relationships than just inlining. This will require a rebuild
  on upgrade to this version.
* Move the rss link, put it in the blogpost form if there is one and at the
  top if not. This is both nicer because easier to find, and it cleans up
  the code which had used inlinepage as a flag for adding the link later.
* Allow the depends GlobList to be built up from multiple sources (such as
  plugins) during a page render.
* Which means that more than one blog is now supported to appear on a
  single page. (With some limitations.)