R1:2880732a49a8

Generate expected schemata for Search

Summary:
Ref T1191. Notable:

- Drops a very old saved query table. See comments inline: plan was to remove it after a year. It's been ~a year and two weeks.
- This has our only fulltext index. I'm not supporting that formally for now, but left a note.
- This has our only MyISAM table. I'm not supporting that explicitly for now, but it shouldn't affect anything. I may deal with this in the future.
- These tables don't actually write directly via Lisk, so…