eab5725698
Use $object->sqlValue('NULL') (identical to DataObject_Cast'ing) instead and
fix related issues like (email|sms)settings considering these NULLs as a
false positive for the E-Mail address still being set when it's been removed.
There could also be security implications to the now-disabled approach of
considering 'NULL' strings as SQL NULLs.
GNU social modules are like plugins but cannot be disabled. Having "mandatory plugins" allows to aggregate together, more logically, some of the core functionality, which makes it easier to find where a particular component was defined.