Remove old configuration files

Files were marked as not to be used any longer; someone who really needs
them can get them from version control or a previous release.
Clean up version information boilerplate

 - Use Official GPL stanza in firehol.in
   From: Jari Aalto <jari.aalto@cante.net>
 - Point to the mailing list for announcements
 - Single copy of the version information boilerplate

Conflicts:
	sbin/firehol.in
Implement version numbers

Using a combination of git attributes, ident and export-subst.
  - Scripts use Format: to emit tag or commit when exported
    or file Id if direct from git
  - configure script uses same mechanisms but cannot do a make dist
  - Brought bolierplate in line for both scripts