Commit Briefs
Remove redundant error check after got_object_id_by_path().
An error code is always returned when the oid is NULL.
Remove unnecessary pthread_yield(3).
In the two cases a context switch isn't necessary as the thread isn't blocked and doesn't need to wait for its sibling.
make got and tog accept a --version argument; -V option is a bit obscure
prompted by a question from tedu@
always show numeric dates in ISO-8601/xkcd-1179 format
ok millert tracey sthen