Add Vcs-* control fields

These fields indicate that this package is maintained under a VCS, and
where to find it.
Remove a build artefact file

bsdowl.substvars is generated at package construction, but not part of
the source package.
Correct the package Description

(a few English mistakes)
Add a comment to explain what CeCILL-B is
Merge remote-tracking branch 'origin/debian' into debian

* origin/debian:
  Add meta-information bits

Conflicts:
	debian/control
Remove a built artefact file

files is generated at package construction, but not part of
the source package.
Update the Source URL in debian/copyright
Simplify watch file and add PGP check

The upstream author published official tarballs which are simpler and
cleaner to locate and download than Git tags. He also published detached
PGP signatures, which we can automatically check.
Exclude wiki files from the distribution tarball
Remove files from the Debian port

These files should actually live on another branch.
Remove configure produced files from the distribution
BSD Owl Scripts v2.2.2

This maintenance release improves the distribution tarball
preparation to ease packaging under Debian.
Merge branch 'maintenance/v2.2' into debian

Conflicts:
	debian/source/format
Update version to 2.2.2
Import configure script