Misc comment typo fixes.

Heikki Linnakangas <heikki.linnakangas@iki.fi>

Commit: 4d65e16a6ff609701a8780d3cddbae02c6e20926
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: 2014-12-16T14:37:46Z
Releases: 9.5.0
Misc comment typo fixes.

Backpatch the applicable parts, just to make backpatching future patches
easier.

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