MFH: r308671

When you select make OLDTIMEZONES=1 then you need a few added directories
to be made or the command fails

Sponsored by: panzura

MFH: r310426

If you are going to be run individually to make a new timezone set
then ensure the destination directories exist.
Especially if you define OLDTIMEZONES because the mtree pass
doesn't do it for you.

Sponsored by: Panzura