Unify find_other_exec() error messages

Peter Eisentraut <peter@eisentraut.org>

Commit: 7666ef313dcc22c8716ee74dfefab8e5ea628678
Author: Peter Eisentraut <peter@eisentraut.org>
Date: 2020-05-08T11:34:53Z
Releases: 13.0
Unify find_other_exec() error messages

There were a few different ways to line-wrap the error messages.  Make
them all the same, and use placeholders for the actual program names,
to save translation work.

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