pgsql: pg_upgrade: prevent automatic oid assignment

pg_upgrade: prevent automatic oid assignment

Prevent automatic oid assignment when in binary upgrade mode. Also
throw an error when contrib/pg_upgrade_support functions are called when
not in binary upgrade mode.

This prevent automatically-assigned oids from conflicting with later
pre-assigned oids coming from the old cluster. It also makes sure oids
are preserved in call important cases.

Branch
------
master

Details
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http://git.postgresql.org/pg/commitdiff/a7ae1dcf4939cf643c5abe8dd673e4b87a6efd42

Modified Files
--------------
contrib/pg_upgrade_support/pg_upgrade_support.c | 17 +++++++++++++++++
src/backend/catalog/heap.c | 12 +++++++-----
src/backend/catalog/index.c | 13 +++++++------
src/backend/catalog/pg_enum.c | 7 ++++++-
src/backend/catalog/pg_type.c | 16 +++++++++++++---
src/backend/catalog/toasting.c | 6 +++++-
src/backend/commands/typecmds.c | 9 +++++++--
src/backend/commands/user.c | 9 +++++++--
8 files changed, 69 insertions(+), 20 deletions(-)

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