Note: this commit forms a unit with "Experimental removal of HAVE_KERNEL_PLL."
If either are referted, both should be.

It was nuked ages ago.

It doesn't work after Eric's removal of HAVE_KERNEL_PLL

Fix due to Miroslav Lichvar.

Note: Zeroing this member instead would conform to a draft RFC on data
minimization now in process.  A future direction, but we want to
verify that we've restored expected behavior first.

Problem was that int/int gives an int on python 2 but float on python 3

Add Debian Stretch/9
Add Ubuntu 14.04 LTS
Add Ubuntu 16.04 LTS
Add Ubuntu 17.10

However, restore building omnmn Solaris, which doesn't have STA_* symbols
in timex.h. Reporting of the kernel status word will be degraded on these
systems.

This fixes the FHS violation in bug #414