Official PPA for dmd

[Andrew Pennebaker via Digitalmars-d]

I'm happy to see an official .DEB for installing DMD! Could we 
please host this in a PPA, to make it easier for Debian/Ubuntu 
users to install?

This would make dmd play nicer with automated provisioning sytems 
like Chef/Puppet, and pave the way for dmd making it into the 
official Ubuntu repositories one day.