[PROJ] libproj4 archived in a github repo [was Re: "eck_greif" projection, "libproject"?]

[Even Rouault]

> This is likely the libproj4, that was forked from PROJ4 in 2002 by Jerry
> Evenden when he disagreed with the project directions :
> http://libproj4.maptools.org/
> 
> Particularly the lbp4_050319S.tar.gz source archive. Unfortunately I can't
> find any mention of eck_greif into it.

For the sake of historical preservation and easier digging into that code 
base, I've imported it in an archived github repo at:
https://github.com/rouault/libproj4

Even

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