pgsql: Have CREATE TABLE LIKE add OID column if any LIKEd table has one

Have CREATE TABLE LIKE add OID column if any LIKEd table has one

Also, process constraints for LIKEd tables at the end so an OID column
can be referenced in a constraint.

Report by Tom Lane

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/b943f502b788a3708ca660785fd14a4ee938fdcd

Modified Files
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src/backend/parser/parse_utilcmd.c              |   44 ++++++++++++++++++++---
src/test/regress/expected/create_table.out      |    3 ++
src/test/regress/expected/create_table_like.out |   27 ++++++++++++++
src/test/regress/sql/create_table.sql           |    4 +++
src/test/regress/sql/create_table_like.sql      |   13 +++++++
5 files changed, 86 insertions(+), 5 deletions(-)