Fix descriptor output in ECPG.

Michael Meskes <meskes@postgresql.org>

Commit: 28fff0ef8b1fadc105aaf28e224e8a5e87866875
Author: Michael Meskes <meskes@postgresql.org>
Date: 2014-01-09T14:41:51Z
Releases: 9.3.3
Fix descriptor output in ECPG.

While working on most platforms the old way sometimes created alignment
problems. This should fix it. Also the regresion tests were updated to test for
the reported case.

Report and fix by MauMau <maumau307@gmail.com>

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