Drop stray references to debian files.
Drop stray reference to bin/backup-files.
configure: add compat symlinks for cp and md5sum

Allow distributors to provide compat symlinks for cp and md5sum on
non-GNU systems.  md5sum is used by quilt/scripts/inspect and is
provided by GNU coreutils, but may be installed as gmd5sum on some
systems (e.g. OpenBSD).  quilt/scripts/backup-files invokes cp
with some non-portable GNU-specific command line arguments
(e.g. --parents --remove-destination --target-directory).

Original diff from Jérémie Courrèges-Anglas <jca@wxcvbn.org> on
OpenBSD ports mailing list.

Reported-by: Jérémie Courrèges-Anglas <jca@wxcvbn.org>
Signed-off-by: Kent R. Spillner <kspillner@acm.org>
fr.po: Update last translator
Update automatically generated configure script
Missing changelog entry (yes, again)
Add step-by-step releasing guide
Fix a typo in changelog