Use /var/db/obsolete instead of /etc/obsolete
etc/Makefile:
Create separate target "install-obsolete-files" to populate
/var/db/obsolete, instead of using "install-etc-files".
Makefile:
Add do-obsolete target, to run "cd etc && make install-obsolete-files",
and add this to BUILDTARGETS.
This moves the "obsolete files" creation from "distribution" to "build".
Per discussion with Andrew Brown.
consistent with what FreeBSD uses /etc/defaults for, and since SVR4
uses /etc/default for another purpose.
as discussed on tech-userlevel, and no objections were made.