Allow isolation tests to specify multiple setup blocks.

Kevin Grittner <kgrittn@postgresql.org>

Commit: c63f309cca07c0570494a8f36092633635990db8
Author: Kevin Grittner <kgrittn@postgresql.org>
Date: 2012-09-05T00:31:06Z
Releases: 9.3.0
Allow isolation tests to specify multiple setup blocks.

Each setup block is run as a single PQexec submission, and some
statements such as VACUUM cannot be combined with others in such a
block.

Backpatch to 9.2.

Kevin Grittner and Tom Lane

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