[LinuxPPS] ntp-dev-4.2.5p158 & Udo's NMEA patch - updated

[Udo van den Heuvel]

Folkert van Heusden wrote:
>>>> Thanks,
>>>> Nut why run this (unstable?) ntp version?
>>> Why not?
>> Why do they name certain releases 'stable' then?
> 
> If no-one ever tries the development release, no new stable release will
> be released.

Yes, but what was changed and why?
Are the changes bug-free?
Are they impacting `your` part of the ntpd?
Can you discern all bugs from possibly subtle LinuxPPS-related issues?