Python bindings: expose gdal_translate -eco and -epo

[dbaston]

1. Sets GDALTranslateOptions::bQuiet to true by default. Otherwise, it is only true when called constructed with a progress callback. Possibly this variable could be removed altogether, as there are other methods for squelching errors.

2. Exposes gdal_translate options -epo and -eco as errorIfWindowPartiallyOutsideSource and errorIfWindowCompletelyOutsideSource. I would love for these to be True by default, but...backwards compatibility. (Maybe they could be the default for gdal raster clip though? ) I also don't love the names, maybe there is a better way to do it with a single text argument.

[coveralls]

coverage: 70.586% (+0.01%) from 70.574%
when pulling 5c7f295 on dbaston:gdal-translate-python-epo
into c4a2e0b on OSGeo:master.

[rouault]

2. I also don't love the names, maybe there is a better way to do it with a single text argument.

maybe errorIfWindowOutsideSource = partially | fully ?

(there's a conflict in the test with your previous PR I just merged)

[jratike80]

So this case, where the -projwin is in EPSG:2391 and is the minimum envelope that covers the whole source raster that is in EPSG:3067, is an -epo case, right? No complaint, just want to know.

[dbaston]

So this case, where the -projwin is in EPSG:2391 and is the minimum envelope that covers the whole source raster that is in EPSG:3067, is an -epo case, right?

Yes, but I can see that this is crying out for some examples in the docs. You can also try it on with -epo on the command line (that has been available for a very long time).

For me, the surprising thing about allowing a window outside source raster is how the extra pixels get populated with zeros, not NoData.