pgsql: Fix contrib/postgres_fdw's handling of column defaults.

Fix contrib/postgres_fdw's handling of column defaults.

Adopt the position that only locally-defined defaults matter. Any defaults
defined in the remote database do not affect insertions performed through
a foreign table (unless they are for columns not known to the foreign
table). While it'd arguably be more useful to permit remote defaults to be
used, making that work in a consistent fashion requires far more work than
seems possible for 9.3.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/50c19fc76f05124b80fc4c5d20a359c5dbf017af

Modified Files
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contrib/postgres_fdw/deparse.c | 55 ++---
contrib/postgres_fdw/expected/postgres_fdw.out | 285 ++++++++++++------------
contrib/postgres_fdw/postgres_fdw.c | 43 +++-
contrib/postgres_fdw/postgres_fdw.h | 9 +-
contrib/postgres_fdw/sql/postgres_fdw.sql | 15 +-
5 files changed, 205 insertions(+), 202 deletions(-)