This patch migrates abuse_filter and abuse_filter_history tables
to new actor schema.
MigrateActorsAF was copy-pasted from core's
maintenance/includes/MigrateActors.php before removal (ba3155214).
Bug: T188180
Change-Id: Ic755526d5f989c4a66b1d37527cda235f61cb437
* Move all SQL files into db_patches (or below)
** Remove db type from filename
* Remove a lot of duplicated code and simplify
Change-Id: If22f2a2c46a59ac24c89ce612c74d169f053ab26