I ran:
for i in `grep -R onPluginVersion...version plugins/|cut -d: -f1`; do sed -i '{ s/\(onPluginVersion(\)\(\&\$versions\)/\1array \2/ }' $i; done

lib/plugin.php now has a parent onAutoload function that finds most common
files that are used in plugins (actions, dataobjects, forms, libs etc.) if
they are put in the standardised directories ('actions', 'classes', 'forms',
'lib' and perhaps some others in the future).

Lots of the Memcached_DataObject classes stopped working when upgraded to
Managed_DataObject because they lacked schemaDef().

I have _hopefully_ made it so that all the references to the table uses
each class' schemaDef, rather than the more manual ColumnDef stuff. Not
all plugins have been tested thoroughly yet.

NOTE: This is applied with getKV calls instead of staticGet, as it was
important for PHP Strict Standards compliance to avoid calling the non-
static functions statically. (unfortunately DB and DB_DataObject still do
this within themselves...)

'admin' is a pretty common username that people try when installing;
it was blacklisted because all of our admin panels were at /admin/*,
which would conflict with the admin user's namespace.

Changed the location of all admin panels to /panel/*, blacklisted the
nickname 'panel', and allowed 'admin'. Tested with a fresh install;
seems to work great.

We need to bundle counts of notices and users by date. This can be
expensive for large sites. So, new tables are added to cache the
results of these queries, which don't change after the date is over.