Add options to force quoting of all identifiers.

Robert Haas <rhaas@postgresql.org>

Commit: ce68df468a41d8dbb992184aad490c07d02ca721
Author: Robert Haas <rhaas@postgresql.org>
Date: 2010-07-22T01:22:35Z
Releases: 9.1.0
Add options to force quoting of all identifiers.

I've added a quote_all_identifiers GUC which affects the behavior
of the backend, and a --quote-all-identifiers argument to pg_dump
and pg_dumpall which sets the GUC and also affects the quoting done
internally by those applications.

Design by Tom Lane; review by Alex Hunsaker; in response to bug #5488
filed by Hartmut Goebel.

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