12.0-CURRENT missing timezones

[David Boyd]

In the most recent images for 12.0-CURRENT

	FreeBSD-12.0-CURRENT-amd64-20180208-r329009.vmdk.xz
	
	FreeBSD-12.0-CURRENT-amd64-20180208-r329009-disc1.iso
	
	FreeBSD-12.0-CURRENT-amd64-20180131-r328637-memstick.img

the /usr/share/zoneinfo directory is sparsely populated with
directories. The only file present is "zone.tab".

Thanks for looking into this.

David Boyd <David.Boyd49 at twc.com>