REL 10.3 has no md5 checksum

[Ernie Luzar]

I see differences between previous releases of FreeBSD and the new 10.3 
release dealing with the ftp download sites.
The path has changed.
The MD5 checksum files are missing.
There is a new .xz suffix on the end of some .iso files.

Didn't see anything about this in the Release notes.

https://www.freebsd.org/releases/10.3R/announce.html does say the sha256 
and md5 hashes follow at the bottom of the message. But only sha256 & 
sha512 hashes are shown.

Think some corrections are in order.