avoid deadlocks when changing query_servers configs, BugzID 10679
avoid deadlocks when changing query_servers configs, BugzID 10679

linearregression/bigcouch,cloudant/bigcouch,bittorrent/bigcouch,georgemarshall/bigcouch,PerilousApricot/bigcouch,breezjw/bigcouch,davidcoallier/bigcouch,benoitc/bigcouch,andrejb/cloudant_bigcouch,Asquera/bigcouch,davidcoallier/bigcouch,KlausTrainer/bigcouch,Gussy/bigcouch,georgemarshall/bigcouch,georgemarshall/bigcouch,KlausTrainer/bigcouch,benoitc/bigcouch,breezjw/bigcouch,KlausTrainer/bigcouch,breezjw/bigcouch,cloudant/bigcouch,breezjw/bigcouch,Gussy/bigcouch,Asquera/bigcouch,bittorrent/bigcouch,benoitc/bigcouch,andrejb/cloudant_bigcouch,breezjw/bigcouch,cloudant/bigcouch,Asquera/bigcouch,bittorrent/bigcouch,Gussy/bigcouch,linearregression/bigcouch,linearregression/bigcouch,PerilousApricot/bigcouch,Asquera/bigcouch,kofron/bigcouch,andrejb/cloudant_bigcouch,linearregression/bigcouch,andrejb/cloudant_bigcouch,PerilousApricot/bigcouch,benoitc/bigcouch,georgemarshall/bigcouch,andrejb/cloudant_bigcouch,davidcoallier/bigcouch,Gussy/bigcouch,cloudant/bigcouch,linearregression/bigcouch,Gussy/bigcouch,Asquera/bigcouch,Asquera/bigcouch,cloudant/bigcouch,kofron/bigcouch,PerilousApricot/bigcouch,breezjw/bigcouch,linearregression/bigcouch,PerilousApricot/bigcouch,georgemarshall/bigcouch,KlausTrainer/bigcouch,kofron/bigcouch,kofron/bigcouch,andrejb/cloudant_bigcouch,andrejb/cloudant_bigcouch,bittorrent/bigcouch,bittorrent/bigcouch,Gussy/bigcouch,cloudant/bigcouch,PerilousApricot/bigcouch,davidcoallier/bigcouch,linearregression/bigcouch,bittorrent/bigcouch,kofron/bigcouch,KlausTrainer/bigcouch,davidcoallier/bigcouch,davidcoallier/bigcouch,kofron/bigcouch,benoitc/bigcouch,georgemarshall/bigcouch,cloudant/bigcouch,KlausTrainer/bigcouch,benoitc/bigcouch