Native debian setup

Debian directory from official Debian GNU/Linux Experiemental source package by Aron Xu.

I've done some cosmetic changes, such as me as uploader, added myself to some copyright notice (I DID [re]write [large]parts of the debian/rules file), target 'wheezy' instead of 'experimental' and also some gitignore stuff for the debian dir.

See #289 for the spl pull.