[CentOS] Package updates for 5.4?

As per the Redhat Virtualisation Expo yesterday... API/ABI
compatibility is maintained within the point releases. If your stuff
is certified on 5.4 it will run on 5.5/5.6.

In addition there are compatibility libraries to get anything running
on 5.X on 6.0... and when you move to 6.0 then anything running on 6.0
will run on 6.X.

James