CONS:
- the use of it makes the presence of gpsd necessary and creates a
dependancy from libgpsd when compiling
- if we use libgpsd, this is not backward-compatible with existing serial
parsing code
Make _sure_ it's not required. The configure should test for it and
disable its usage (and fall back to either the old code, or no GPS
support at all).
Cheers,
Sylvain