New mirror layout for the merged core and extras

[Warren Togami]

Jesse Keating wrote:
> 
> For a period of time, the core/development and extras/development content will 
> stick around as it was last updated.  This will allow mirrors to have 
> something to hardlink against for the new merged content in 
> linux/development.  After a short time, the core/development will become a 
> symlink to linux/development as will extras/development become a symlink to 
> the same place, for a period of time before the directories are expunged all 
> together.
> 

Might it be a better to symlink core/development to linux/development, 
and make extras/development into an empty repo?

That way yum isn't grabbing the same metadata twice.

Warren