[openfabrics-ewg] convention for git directories on the new git OFA server

[Roland Dreier]

 > So, what do you suggest for openfabrics? Could you write it up?

Actually, ~user is probably OK.  If we want to do ~ofed then we just
have to create an ofed user, and a group to put everyone with write
permission to the ofed tree.  Creating directories in /pub/scm just
saves creating the fake user and fake home directory.

 - R.