Some logging categories have the same names as configuration statements.
This caused some category names to be replaced with links to statement
definitions, which confuses util/check-categories.sh script.
It turns out that many manual edits were required:
- Heading underlines were too short because :any:`` is longer than ````
- Some statement names clashed with manually defined _link_anchors
(notify, trust-anchors etc.)
- Zone types are defined like "type primary" in the internal grammar and
that caused mayhem in the replacement script as it took "type" and
individual types ("primary", "secondary") as separate statements.
For that reason :any:`primary` had to be manually replaced with
:any:`primary <type primary>` where appropriate.
- Sometimes option name is also the same as a value name (e.g. "notify")
and then it did not make sense to do the replacement.
We have had perpetual problem with Sphinx implicitly double-including
files. To avoid that problem all files with name suffix .inc.rst are now
ignored by Sphinx, and writter can conveniently include them without
modifying conf.py for each and every file.
