Add new_name_timestamp index when upgrading from 1.1

This index is specified in some FORCE INDEX clauses, so it has to be
present. Patch already exists; the installer just wasn't using it.

There still are some other schema inconsistencies I have to track
down, so I'm not yet adding a release note that upgrading from 1.1
has been "fixed".

Change-Id: Ibd593d3f5b63f4cb033c6c9dabaac398bb1afd19