apt-pkg/deb/dpkgpm.{cc,h}

- a bit cleanup
- move the log date to the right place
- write log to dir::log::name
apt-pkg/init.cc:
- init dir::log::name "/var/log/apt/term.log"
debian/apt.dirs:
- create /var/log/apt/
doc/examples/configure-index:
- add new dir::log::name to the index