Add postgres_fdw contrib module.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: d0d75c402217421b691050857eb3d7af82d0c770

Author: Tom Lane <tgl@sss.pgh.pa.us>

Date: 2013-02-21T10:27:16Z

Add postgres_fdw contrib module.

There's still a lot of room for improvement, but it basically works,
and we need this to be present before we can do anything much with the
writable-foreign-tables patch.  So let's commit it and get on with testing.

Shigeru Hanada, reviewed by KaiGai Kohei and Tom Lane

Files

Path	Change	+/−
contrib/Makefile	modified	+1 −0
contrib/postgres_fdw/connection.c	added	+581 −0
contrib/postgres_fdw/deparse.c	added	+1104 −0
contrib/postgres_fdw/expected/postgres_fdw.out	added	+704 −0
contrib/postgres_fdw/.gitignore	added	+4 −0
contrib/postgres_fdw/Makefile	added	+27 −0
contrib/postgres_fdw/option.c	added	+293 −0
contrib/postgres_fdw/postgres_fdw--1.0.sql	added	+18 −0
contrib/postgres_fdw/postgres_fdw.c	added	+1400 −0
contrib/postgres_fdw/postgres_fdw.control	added	+5 −0
contrib/postgres_fdw/postgres_fdw.h	added	+52 −0
contrib/postgres_fdw/sql/postgres_fdw.sql	added	+272 −0
doc/src/sgml/client-auth.sgml	modified	+1 −1
doc/src/sgml/contrib.sgml	modified	+1 −0
doc/src/sgml/dblink.sgml	modified	+15 −11
doc/src/sgml/filelist.sgml	modified	+1 −0
doc/src/sgml/libpq.sgml	modified	+1 −1
doc/src/sgml/postgres-fdw.sgml	added	+325 −0
doc/src/sgml/queries.sgml	modified	+1 −1
doc/src/sgml/recovery-config.sgml	modified	+1 −2
doc/src/sgml/ref/create_foreign_data_wrapper.sgml	modified	+0 −8
doc/src/sgml/ref/create_foreign_table.sgml	modified	+7 −5
doc/src/sgml/ref/create_server.sgml	modified	+8 −14
doc/src/sgml/ref/grant.sgml	modified	+3 −4
doc/src/sgml/ref/pg_isready.sgml	modified	+2 −1
doc/src/sgml/ref/psql-ref.sgml	modified	+5 −4
doc/src/sgml/runtime.sgml	modified	+1 −1
src/backend/foreign/foreign.c	modified	+6 −2