Support parallel-installed Django eggs
If a system has different versions of Django installed as separate

eggs (such as having the latest version as well as an older version

for compatibility with ReviewBoard), this addition to the WSGI

loader enables it to find the matching supported version on the

system.
This will also make things easier on distro upgrades, as it will be

possible to have both the Django 1.4 egg on the system with Review

Board 1.7.21 and Django 1.6 in place for Review Board 2.0
A release note will be needed for existing sites, as if they want to

support this capability, they will need to update their

reviewboard.wsgi file manually. This patch will take affect only for

new installs.

Installed the prototype parallel-installable Django 1.4 package on Fedora 20: http://toshio.fedorapeople.org/django/python-django14-1.4.8-1.fc20.1.src.rpm
Verified that ReviewBoard starts properly. It failed without this patch.