- Add macros and sources for PostgreSQL 16.9 upgrade support
- Build and install PostgreSQL 16 upgrade server in addition to PostgreSQL 17
- Create postgresql16.conf configuration file for PostgreSQL 16 upgrades
- Update upgrade package files section to include both versions
- Update package description to mention support for both versions 16 and 17
- Update macros.postgresql-upgrade to include both upgrade prefixes
- Add --with-openssl parameter to upgrade_configure function
- This ensures upgrade server is compiled with OpenSSL support
- Required for SSL/TLS connections during database upgrades
- Bump release to 18beta1-5