pgsql: Use pg_dump's --quote-all-identifiers option in pg_upgrade.

Use pg_dump's --quote-all-identifiers option in pg_upgrade.

This helps guard against changes in the set of reserved keywords from
one version to another.  In theory it should only be an issue if we
de-reserve a keyword in a newer release, since that can create the type
of problem shown in bug #8128.

Back-patch to 9.1 where the --quote-all-identifiers option was added.

Branch
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REL9_1_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/56ac62570591615ed68137e4d3197e881ca3a405

Modified Files
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contrib/pg_upgrade/dump.c |    3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)