~ $ sudo add-apt-repository ppa:ok2cqr/lazarus
~ $ sudo apt-get update
~ $ sudo apt-get upgrade
~ $ sudo apt-get dist-upgrade
After the upgrade, your /etc/fpc.cfg is once more a symlink pointing to /etc/alternatives/fpc.cfg which itself is a symlink pointing to /etc/fpc-2.6.4.cfg. If you're following my previous notes you'll need to redirect /etc/fpc.cfg to your ~/Development/fpc.cfg again:
~/Development $ sudo rm /etc/fpc.cfg
~/Development $ sudo ln -s ~/Development/fpc.cfg /etc/fpc.cfg