Cleaning up the follow joins / collected models methods on QueryResultWrapper.  Specifically replacing recursive call to follow_joins with iterative version.
Cleaning up the follow joins / collected models methods on
QueryResultWrapper.  Specifically replacing recursive call to
follow_joins with iterative version.

mackjoner/peewee,teserak/peewee,d1hotpep/peewee,coreos/peewee,stas/peewee,py4a/peewee,new-xiaji/peewee,wenxer/peewee,ronyb29/peewee,fuzeman/peewee,jarrahwu/peewee,bopo/peewee,jarrahwu/peewee,new-xiaji/peewee,coleifer/peewee,bopo/peewee,fuzeman/peewee,coreos/peewee,zhang625272514/peewee,new-xiaji/peewee,Sunzhifeng/peewee,softside/peewee,coleifer/peewee,zhang625272514/peewee,Sunzhifeng/peewee,jnovinger/peewee,bopo/peewee,Dipsomaniac/peewee,wenxer/peewee,Sunzhifeng/peewee,lez/peewee,jnovinger/peewee,d1hotpep/peewee,zhang625272514/peewee,coreos/peewee,Dipsomaniac/peewee,Dipsomaniac/peewee,ghukill/peewee,coleifer/peewee,jarrahwu/peewee