Fix for bug ID 3441661 : pg_regress: create_view.sql : Where clause in view fails.
Fix for bug ID 3441661 : pg_regress: create_view.sql : Where clause in view fails.

"where" qual expressions are filled with opfuncids, which is required to
determine immuability of functions, specifically because view subquery RTE does
not have function oids populated in its quals.

kmjungersen/PostgresXL,oberstet/postgres-xl,techdragon/Postgres-XL,zeroae/postgres-xl,postmind-net/postgres-xl,postmind-net/postgres-xl,oberstet/postgres-xl,kmjungersen/PostgresXL,pavanvd/postgres-xl,techdragon/Postgres-XL,techdragon/Postgres-XL,ovr/postgres-xl,yazun/postgres-xl,Postgres-XL/Postgres-XL,pavanvd/postgres-xl,zeroae/postgres-xl,postmind-net/postgres-xl,yazun/postgres-xl,zeroae/postgres-xl,arcivanov/postgres-xl,ovr/postgres-xl,zeroae/postgres-xl,kmjungersen/PostgresXL,snaga/postgres-xl,arcivanov/postgres-xl,snaga/postgres-xl,arcivanov/postgres-xl,arcivanov/postgres-xl,arcivanov/postgres-xl,ovr/postgres-xl,oberstet/postgres-xl,yazun/postgres-xl,techdragon/Postgres-XL,postmind-net/postgres-xl,Postgres-XL/Postgres-XL,postmind-net/postgres-xl,pavanvd/postgres-xl,techdragon/Postgres-XL,snaga/postgres-xl,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,oberstet/postgres-xl,arcivanov/postgres-xl,snaga/postgres-xl,zeroae/postgres-xl,yazun/postgres-xl,ovr/postgres-xl,kmjungersen/PostgresXL,snaga/postgres-xl,oberstet/postgres-xl,ovr/postgres-xl,yazun/postgres-xl