Add support for Open Outreach distribution

Added in commit: http://drupalcode.org/project/octopus.git/commit/170ef78

Unfortunately, there must be a weird bug and it doesn't work because the site directory is created with wrong permissions (without write access), see dr-xr-xr-x below:

root@linode:/data/disk/o1/distro/001/openoutreach-7.x-1.0-beta5-7.10/sites# ls -la
total 28
drwxr-x--x 5 o1 users 4096 Dec 21 12:01 .
drwxr-xr-x 4 o1 users 4096 Dec 21 11:02 ..
drwxr-x--x 5 o1 users 4096 Dec 21 10:14 all
drwxr-xr-x 3 o1 users 4096 Dec 21 10:14 default
-rw-r--r-- 1 o1 users 1785 Dec  5 17:18 example.sites.php
dr-xr-xr-x 7 o1 users 4096 Dec 21 12:00 oo.o1.linode.us.host8.biz
-rw-r--r-- 1 o1 users 1780 Dec 21 12:01 sites.php

Recent beta6 fixed the problem: http://openoutreach.org/content/7x-10-beta6