9.5 release notes:  mention ON CONFLICT DO NOTHING for FDWs
9.5 release notes:  mention ON CONFLICT DO NOTHING for FDWs

Report by Peter Geoghegan

Backpatch through 9.5

zeroae/postgres-xl,zeroae/postgres-xl,zeroae/postgres-xl,zeroae/postgres-xl,zeroae/postgres-xl