Fix doxygen doc generation if C++ wrapper is not built

[libftdi] / AUTHORS

Main developers:

  Intra2net AG <opensource@intra2net.com>

Contributors in alphabetical order,
see Changelog for full details:

  Alain Abbas <aa@libertech.fr>
  Alex Harford <harford@gmail.com>
  Anders Larsen <al@alarsen.net>
  Andrew John Rogers <andrew@rogerstech.co.uk>
  Arnim Läuger <arnim.laeuger@gmx.net>
  Aurelien Jarno <aurelien@aurel32.net>
  Chris Zeh <chris.w.zeh@gmail.com>
  Clifford Wolf <clifford@clifford.at>
  Daniel Kirkham <dk2@kirkham.id.au>
  David Challis <dchallis@qsimaging.com>
  Emil <emil@datel.co.uk>
  Evan Nemerson <evan@coeus-group.com>
  Evgeny Sinelnikov <sin@geoft.ru>
  Ian Abbott <abbotti@mev.co.uk>
  Jared Boone <jared@sharebrained.com>
  Jean-Daniel Merkli <jdmerkli@computerscience.ch>
  Juergen Beisert <juergen.beisert@weihenstephan.org>
  Lorenz Moesenlechner <lorenz@hcilab.org>
  Mark Hämmerling <mail@markh.de>
  Marek Vavruša <marek@vavrusa.com>
  Marius Kintel <kintel@sim.no>
  Matthias Kranz <matthias@hcilab.org>
  Matthias Richter <mail.to.mr@gmx.de>
  Matthijs ten Berge <m.h.tenberge@alumnus.utwente.nl>
  Max <max@koeln.ccc.de>
  Michel Zou <xantares09@hotmail.com>
  Mike Frysinger <vapier.adi@gmail.com>
  Nathan Fraser <ndf@undershorts.org>
  Oleg Seiljus <oseiljus@xverve.com>
  Peter Holik <peter@holik.at>
  Rogier Wolff <R.E.Wolff@harddisk-recovery.nl>
  Steven Turner <steven.turner@ftdichip.com>
  Tarek Heiland <tarek@illimitable.com>
  Thimo Eichstaedt <abc@digithi.de>
  Thomas Fischl <fischl@fundf.net>
  Tim Ansell <mithro@mithis.com>
  Tom Saunders <trsaunders@gmail.com>
  Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
  Vladimir Yakovlev <nagos@inbox.ru>
  Wilfried Holzke <libftdi@holzke.net>
  Xiaofan Chen <xiaofanc@gmail.com>
  Yi-Shin Li <ysli@araisrobo.com>