references to man-db manual are unclear

[Karl-Philipp Richter]

Quote from the `-M --manpath` section of the manpage of `man`: "A path specified as a manpath must be the root of a manual page hierarchy structured into sections as described in the man-db manual (under "The manual page system")." This section doesn't exist in the manpage of `mandb`.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: manpages 3.74-1ubuntu1
Uname: Linux 4.3.3-040303-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Dec 23 16:40:11 2015
Dependencies:

InstallationDate: Installed on 2015-12-12 (11 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: manpages
UpgradeStatus: No upgrade log present (probably fresh install)

[Colin Watson (cjwatson)]

It is not referring to mandb(8), but to the more discursive manual for the package as a whole that you will find in /usr/share/doc/man-db/man-db-manual.{ps,txt}.gz. I'll have a think about how to make this more clearly structured; it might be that the right answer is to migrate the package manual into a section 7 manual page, as it's a bit awkwardly laid out right now.