- Install icons to /BUILD_ROOT/DATA_DIR/icons/hicolor/SIZE_SPEC/apps/pgadmin3.PNG|SVG (same parts of path may be distribution specific)
- Use "Icon=pgamdmin3" in pgadmin3.desktop - desktop shell, e.g. GNOME, KDE..., select itself suitable icon version from paths mentioned above.
OK.
Currently only one icon version is installed and used (mostly old icon pgadmin3.xpm). See pkg/debian/pgadmin3.install, pkg/suse/pgadmin3.spec.in... Some distributions added other own icons outside official source code. It would nice prepare unified resources for all Linux and *nix distributions. It includes some other changes, I will post them separately.
As far as I know, none of the the packages in /pkg are used by any distributions except for Windows and Mac. I believe all the Linux platforms have their own spec files (or equivalent) - all the ones we have are extremely outdated and probably should be removed. I'd really like to hear from Linux packagers before we do that though.