Credits (somewhat chronological, hmm... what else?):
----------------------------------------------------

* Frank Kardel was the one to point my nose at NTP. He also wrote that
  fine DCF77 driver (among many others).

* Dave Mills had to read a lot of my stupid questions and bug reports
  about NTP and PPS support.

* Harlan Stenn volunteered to integrate my Linux patches in xntpd. He
  also made the package more widely accepted by converting the
  Makefile-mess to GNU autoconf.

* Theodore Y. Ts'o finally told me where to start adding PPS support
  to the driver.  His very first patch made me start the project.

* H. Peter Anvin ported my original patch forth to Linux 2.1, and
  he'll probably do it again...

* Harald König gave several useful hints and supplied his patches.

* Bill Broadley for trying out all the patches (and he never became
  perfectly happy....) Update: PPSkit-0.6.1 made him happy ;-)

* Nigel Metheringham supplied an updated patch for sparc architecture
  and Linux-2.0.33.

* Several people out there reading comp.protocols.time or linux-kernel
  volunteered in testing the new stuff.  Special thanks to Robert B. Hamilton
  <rbh041a@unix.tamu.edu> for the ``calibrate_tsc()'' fix.  Kjetil Barvik
  <kjetilba@ifi.uio.no> found another problem in an early nanokernel release.

* Luis Batanero <luisba@roa.es> pointed out some bugs during
  implementation of the Linux nanokernel.

* Daniel Haun <haund@usa.net> found a stupid error introduced with
  PPSkit-0.6.0 in fs/nfsd/nfssvc.c.
 
* Bdale Garbee <bdale@gag.com> pointed out that ``cpu_hz'' is also
  used if ``CONFIG_X86_TSC'' is not defined.

* The people at Meinberg, Germany who provided test equipment
  (Meinberg GPS 167)

* Reg Clemens <reg@dwf.com> contributed a patch to implement the
  brandnew PPS API (based on code written by Poul-Hennig Kamp for
  FreeBSD).  He also directed me towards the solution of the
  mysterious jitter problem.  Confirmed compilation problems with
  RedHat Linux 5/6.

* ... so we list Poul-Hennig Kamp <phk@FreeBSD.org> too! In addition,
  we are honest and reproduce his ``"THE BEER-WARE LICENSE" (Revision 42)''
  in <linux/timepps.h>.

* David Schwartz <davids@webmaster.com> reported success for
  ``GPS_NMEA'' after fixing a stupid bug (made by me).
