[PROJ] Disable .local in 7.0.0RC default search paths

[Even Rouault]

> This is a very useful clarification, thanks. Looking at
> networkfilemanager.cpp, I can see plenty of functions giving insight when
> I need it. For now, I can add an rgdal load-time comment from
> pj_context_is_network_enabled() to confirm that the network functionality
> is disabled.

This is an internal function. I've just submitted
https://github.com/OSGeo/PROJ/pull/1967 to expose it as an exported function

-- 
Spatialys - Geospatial professional services
http://www.spatialys.com