Avoid locale dependency in expected output.

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

Commit: ba69b419a8015986d018e25173f8cf4233a3c2d9
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2011-08-24T17:47:01Z
Releases: 9.2.0
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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