[mythtvnz] Upgrade Mythbuntu 7.10 to 8.04lts to get 0.21

[Noel & Di]

Hi Stephen
Tell me more about your bootable Clonezilla/Gparted CD.  How did you 
create that under Linux?
I have to hunt down the commands to do ANYTHING with Linux, and it takes 
me AGES to do the simplest of things.  I know what I want to do and how 
I would do it in a DOS or windoze environ, but Linux is so different for 
me ;o)  Thanks for your patience!