Remove all ad-hoc function support from GDN_SQLDriver->Set().
Throw an error if an array is passed to GDN_SQLDriver->ConditionExpr().

This has been a deprecated warning for more than two years now so I think it’s time to just throw an exception.
Add named parameters back to GDN_SQLDriver->Set().
Validate string database fields as strings before trying to save.
Change the wording on the exception.
Merge branch 'hotfix/sql-harden' of github.com:vanilla/vanilla into stage