Log Message:
databases/postgresql-postgis2: Update to 3.4.0

Packaging changes:
  - Accept pgsql 15.
  - No longer accept pgsql 11.
  - use gsed as tool (something in the build wanted it)

Selected upstream NEWS:

PostGIS 3.4.0
2023/08/xx

There are 2 new ./configure switches:

 -  --disable-extension-upgrades-install, will skip installing all the extension \ 
upgrade scripts except for the ANY--currentversion. If you use this, you can \ 
install select upgrades using the postgis commandline tool
 -  --without-pgconfig, will build just the commandline tools
    raster2pgsql and shp2pgsql even if PostgreSQL is not installed

* New Features *
  - #5052, target version support in postgis_extensions_upgrade
    (Sandro Santilli)
  - New install-extension-upgrades command in postgis script (Sandro Santilli)
  - #5006, GH705, ST_Transform: Support PROJ pipelines (Robert Coup, Koordinates)
  - #5283, [postgis_topology] RenameTopology (Sandro Santilli)
  - #5286, [postgis_topology] RenameTopoGeometryColumn (Sandro Santilli)
  - GH703, [postgis_raster] Add min/max resampling as options (Christian Schroeder)
  - #5336, [postgis_topology] topogeometry cast to topoelement support (Regina Obe)
  - Allow singleton geometry to be inserted into Geometry(Multi*) columns (Paul \ 
Ramsey)
  - GH721, New window-based ST_ClusterWithinWin and ST_ClusterIntersectingWin \ 
(Paul Ramsey)
  - #5267, ST_Project signature for geometry, and two-point signature (Paul Ramsey)
  - #5267, ST_LineExtend for extending linestrings (Paul Ramsey)
  - New coverage functions ST_CoverageInvalidEdges, ST_CoverageSimplify, \ 
ST_CoverageUnion (Paul Ramsey)

* Enhancements *
  - #5092, reduce number of upgrade paths installed on system,
           by providing an ANY intermediary path that all upgrades will
           go thru (Sandro Santilli)

* Breaking Changes *
  - #5306, GH734, postgis_full_version() and postgis_proj_version()
    now output more information about proj network configuration
    and data paths. GEOS compile-time version
    also shown if different from run-time
    (Paul Ramsey, Sandro Santilli)
  - #5447, postgis_restore.pl renamed to postgis_restore
    (Sandro Santilli)
  - Utilities now installed in OS bin or
    user specified --bindir and --prefix
    instead of postgresql bin
    and extension stripped except on windows
    (postgis, postgis_restore, shp2pgsql, raster2pgsql, pgsql2shp,
    pgtopo_import, pgtopo_export)