QGIS 3 builds with geoPDF now

[Jim Spath <jspath55%gmail.com@localhost>]

Thanks to Greg Troxel, the qgis package can now read and write
Geospatial PDF files.
The prior issue was something in gdal. Before, flags were missing:

The wrong answer (old):
$ gdalinfo --formats | grep -i PDF
PDF -raster,vector- (w+): Geospatial PDF (*.pdf)

The correct answer (new):
$ gdalinfo --formats | grep -i PDF
PDF -raster,vector- (rw+uvs): Geospatial PDF (*.pdf)

In quick tests, I can create a georeferenced PDF, and also load one
into qgis. The lat/lon are correct per adobe Acrobat views.

On a couple slower machines, I am building QGIS versions for other
PostgreSQL versions than the default (currently 16). News at 11.

Pictures and notes here: https://chaos.social/@jspath55/116817352783080942

Jim