[O] Question about org-plus-contrib elpa

[Seth Mason]

According to http://orgmode.org/elpa.html the org-plus-contrib package
has all the files in the /contrib directory but it looks like it's
only grabbing the files that begin with "org-". None of the "ox-" or
"ob-" are in the repo.  Looks like this line in servers.mk is the
culprit:

    elpaplus-dirty elpaplus-up: ORG_ADD_CONTRIB=org-*

Is this an oversight or by design?

Thanks.