memusage man page provided but not the program

[Nick Moffitt]

apropos memory usage recommends memusage(1) and memusagestat(1) but command-not-found cannot find these tools, recommending instead gmemusage (which seems to require X and is unrelated).

I've heard that in Fedora the memusage script is in a libc-utils package, but I seem to have all the libc-bin type packages installed. Do we include the manual page in error?

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: manpages 4.15-1
ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Fri Aug 24 10:28:55 2018
Dependencies:

InstallationDate: Installed on 2014-05-29 (1547 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: manpages
UpgradeStatus: Upgraded to bionic on 2018-03-10 (166 days ago)