[GRASS-user] PROJ 5 support in trunk

[Markus Metz]

Hi all,

I have added support for the new PROJ 5+ API in trunk, finished with
r72433. This means, trunk is now using exclusively the new PROJ 5+ API if
available.

This new PROJ 5 API is available e.g. in Debian testing.

Please test!

During testing, I discovered some dangerous naming conflicts in GRASS and
PROJ4/PROJ5: internal functions start both in GRASS and PROJ with pj_ which
can lead to cryptic errors. Within GRASS, some but not all
projection-related functions start with GPJ_, this should be adopted for
those starting with pj_. Also the GRASS structure struct pj_info should be
renamed to struct gpj_info.

Markus M
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