[PROJ] [PROJ 6.0.0] Different behaviors for creating a transformation of type EPSG:9616

[Even Rouault]

> 2.- Tested on IGNF:NTFLAMB2E.NGF84 to IGNF:ETRS89LCC.EVRF2000
> but the final type is PJ_TYPE_UNKNOWN, not
> PJ_TYPE_OTHER_COORDINATE_OPERATION :

> 
>     obj = proj_create_crs_to_crs(c, "IGNF:NTFLAMB2E.NGF84",
> "IGNF:ETRS89LCC.EVRF2000", NULL); 

Ah, another subtelty here... 
If you look at the projinfo -s -t output, you'll see several candidate 
operations.
proj_create_crs_to_crs() in that case stores them inside a "wrapper" PJ 
object. So in that situation where you have the wrapper PJ returned, its type 
is PJ_TYPE_UNKNOWN.

(When proj_trans() is called, then one of the candidates is selected 
dependending on the input coordinates.)

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