[Yum] yum HOWTO draft

[Robert P. J. Day]

  since i was the one who apparently whined sufficiently
about a more comprehensive yum tutorial, i'm about to take 
another look at rgb's draft.  one suggestion based on a 
glance at the ToC -- all the client stuff should come
*before* anything related to the server.

  the majority of readers are going to want to just use
the client functionality of yum, and only then will some
of them continue on to perhaps setting up their own
servers.  this is a pretty standard chronological ordering --
client stuff first, then server.

  more later.

rday