[horde] question about horde 2.0 to 2.1

[shannon at flyingmug.com]

I was on the FTP site and saw that there was a horde 2.0 to 2.1 patch.  How 
would I apply this patch to do the upgrade?  I am running horde 2.0, imp 3.0 
and turba 1.0 and I would like to upgrade all these with the patches if I could.