Packages for CentOS 8

[Peter]

I've now successfully built Dovecot packages for CentOS 8 that do not 
have the quota support stripped out.  I was able to do this because 
CentOS has now finally shipped the quota-devel package as well as the 
other -devel packages that were previously missing from CentOS 8.

For those of you who are interested they are in the GhettoForge Testing 
repo for el8 at:
http://mirror.ghettoforge.org/distributions/gf/el/8/testing/x86_64/

These are untested so let me know if anyone experiences any issues with 
them.


Peter