psconvert should ignore writing world file if geotiff output is requested

[PaulWessel]

See #7844 for discussion. Closes #7844. Note to @joa-quim : In messages that says

...the Proj4 command...

should that be PROJ or are these things still called Proj4 even though we are at Proj9? Let me know if we should update such language in source and rst (separate from this PR). I just added an extra check that we only do the world_file output if Ctrl->W.warp (-W+g) is not set. See right, no?

[joa-quim]

Does it work? Because when it calls gdal_translate it's not impossible that a world fine is needed.

The Proj4 vs PROJ. There is only proj4 , the name, or PROJ (and don't pay attention to the capitalization. I don't know what is the correct way). No proj5,6,7,8,9. Functions variables, including in official PostGIS docs are still called proj4... The guys that took care of proj development decided to drop the 4 from the name at around proj v6, but there are still tons of proj4 references in the internet. So, in summary, for my taste, I still prefer to call the proj4 strings as is still used in, for example,
https://spatialreference.org/ref/epsg/4326/

[seisman]

Does it work? Because when it calls gdal_translate it's not impossible that a world fine is needed.

You're right. It needs the world file to produce the GeoTIFF file. It means we need to delete the world file after calling gdal_translate.

[PaulWessel]

OK, I will fix that. Will leave proj4 of course.

[PaulWessel]

How about this one? Had to duplicate world_file since you recycled it for something else and it got lost.