Merge pull request #2 from ericfischer/master

Add V7, 32V, and System III version
Turns out this was a dup of 1979-05-11.

Unclear which date stamp is more correct, though.
Merge pull request #3 from ericfischer/master

Rename v7 files to reflect earlier timestamps in distribution tarball
Thanks.
I got the date stamp for V7 wrong.

Eric got it right.
Remove the "origin" suffix from these directories.

A proper README file will be coming shortly.
The promised README documenting the source of these versions.
Link the READMEs.
Tweak.
One correction.
More accurate.
Found another version.
Found a handful of versions in Debian history.
Found a bunch of versions in the FreeBSD sources.
Note missing years.
Missed a missing year.
Found another early version in the RetroBSD project.