Avoid locale dependency in expected output.

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

Commit: 867c20c0720bb2fb7441cbb80949b9ae579ee774
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2011-08-24T17:47:13Z
Releases: 9.1.0
Avoid locale dependency in expected output.

We'll have to settle for just listing the extensions' data types,
since function arguments seem to sort differently in different locales.
Per buildfarm results.

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