Rename debian packages to match other proposal

A Debian Intent-To-Package (ITP) was filed without our knowledge,
resulting in a source package being built against rev b80d31f.
This commit should put us in cahoots with their package names.

TODO: Update the FIXMEs with the PPA'd revision BEFORE this one
to ensure proper deprecation.

Debian ITP: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=724967
Debian upload: https://ftp-master.debian.org/new/bladerf_0.6.2.1.b80d31f-1.html
Add Altera & OpenCores to Debian copyright file

h/t to A. Maitland Bottoms' Debian package for spotting these