[geomoose-psc] Ubuntu 16.04/PHP MapScript

[Jim Klassen]

It looks like PHP Mapscript is missing from Ubuntu 16.04 because it
didn't (doesn't?) build with PHP 7 at release time.

This means that GeoMoose as is cannot run on the next OSGeoLive which is
based on lubuntu 16.04.  I am not sure what this means for the long term
viability of PHP Mapscript.

I'm not sure what to think about this in terms of action plan, but
getting kicked off of OSGeo Live because of dependencies seems like a
"bad thing".

Thoughts?

https://github.com/OSGeo/OSGeoLive/pull/110

Jim