bin/55470: install manpages from dtracetoolkit

[reed%reedmedia.net@localhost]

>Number:         55470
>Category:       bin
>Synopsis:       missing manpages: dtruss, execsnoop, opensnoop, procsystime
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 07 23:40:00 +0000 2020
>Originator:     reed%reedmedia.net@localhost
>Release:        NetBSD 8.0
>Organization:
>Environment:
Architecture: x86_64
Machine: amd64
>Description:
>How-To-Repeat:
See src/external/cddl/dtracetoolkit/Makefile 
manpages not installed for the executables
>Fix:
See manual pages under
src/external/cddl/dtracetoolkit/dist/Man/man1m/
Are these correct to install?
src/external/cddl/dtracetoolkit/dist/Man/man1m/dtruss.1m
src/external/cddl/dtracetoolkit/dist/Man/man1m/execsnoop.1m
src/external/cddl/dtracetoolkit/dist/Man/man1m/opensnoop.1m
src/external/cddl/dtracetoolkit/dist/Man/man1m/procsystime.1m