Fix comments

Peter Eisentraut <peter_e@gmx.net>

Commit: cc074bf6c1a5305a5e23067c6d9a377840add303
Author: Peter Eisentraut <peter_e@gmx.net>
Date: 2016-03-01T02:19:24Z
Releases: 9.6.0
Fix comments

Some of these comments were copied and pasted without updating them,
some of them were duplicates.

Files