- Fixed bug that would prevent "subqueryload" from

  - Fixed bug that would prevent "subqueryload" from
    working correctly with single table inheritance
    for a relationship from a subclass - the "where
    type in (x, y, z)" only gets placed on the inside,
    instead of repeatedly.

  - When using from_self() with single table inheritance,
    the "where type in (x, y, z)" is placed on the outside
    of the query only, instead of repeatedly.   May make
    some more adjustments to this.