Remove debian/ directory. The lifecycle of the Debian packaging files is better maintained in the Debian pool's diff file. Removing these files makes the life of the GiNaC releaser easier.
* Adjust to files used for rolling Debian's 1.4.0-1 GiNaC packages.
* Preliminar update over Debian's ginac_1.1.3-1.diff.gz.
* Packaging update.
* Distinguish between name and longname variables.
* Now this four-package split-up is gonna get in. Promised.