Automatically transition away from older memcached backends.

Review Request #6481 — Created Oct. 21, 2014 and submitted — Latest diff uploaded

Information

Djblets
release-0.8.x
b094987...

Reviewers

Historically, the memcached backend used the class name 'CacheClass',
which we've been setting and many people have stored. While many
backends in Django do still have their CacheClass equivalent, memcached
does not.

We now fix up the name when normalizing the cache backend, which happens
on site settings load. This guarantees nobody will break.

Accidentally broke my install by having the wrong class set. After this, it
loaded properly and I saw I was using memcached.