Add copy constructor, since apparently we need it.
Add copy constructor, since apparently we need it.

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db,JackieXie168/rethinkdb,bchavez/rethinkdb,AntouanK/rethinkdb,scripni/rethinkdb,wkennington/rethinkdb,victorbriz/rethinkdb,marshall007/rethinkdb,pap/rethinkdb,sebadiaz/rethinkdb,matthaywardwebdesign/rethinkdb,greyhwndz/rethinkdb,sebadiaz/rethinkdb,marshall007/rethinkdb,ajose01/rethinkdb,niieani/rethinkdb,4talesa/rethinkdb,Qinusty/rethinkdb,marshall007/rethinkdb,Wilbeibi/rethinkdb,sontek/rethinkdb,AntouanK/rethinkdb,mbroadst/rethinkdb,urandu/rethinkdb,yakovenkodenis/rethinkdb,greyhwndz/rethinkdb,sbusso/rethinkdb,robertjpayne/rethinkdb,wujf/rethinkdb,captainpete/rethinkdb,yaolinz/rethinkdb,urandu/rethinkdb,yakovenkodenis/rethinkdb,Qinusty/rethinkdb,grandquista/rethinkdb,wujf/rethinkdb,eliangidoni/rethinkdb,losywee/rethinkdb,rrampage/rethinkdb,elkingtonmcb/rethinkdb,mcanthony/rethinkdb,scripni/rethinkdb,JackieXie168/rethinkdb,elkingtonmcb/rethinkdb,gavioto/rethinkdb,4talesa/rethinkdb,yakovenkodenis/rethinkdb,wojons/rethinkdb,elkingtonmcb/rethinkdb,yakovenkodenis/rethinkdb,captainpete/rethinkdb,urandu/rethinkdb,wojons/rethinkdb,tempbottle/rethinkdb,mcanthony/rethinkdb,wujf/rethinkdb,dparnell/rethinkdb,dparnell/rethinkdb,JackieXie168/rethinkdb,sbusso/rethinkdb,marshall007/rethinkdb,Wilbeibi/rethinkdb,pap/rethinkdb,sbusso/rethinkdb,ayumilong/rethinkdb,eliangidoni/rethinkdb,jmptrader/rethinkdb,elkingtonmcb/rethinkdb,mquandalle/rethinkdb,mcanthony/rethinkdb,losywee/rethinkdb,JackieXie168/rethinkdb,jmptrader/rethinkdb,jesseditson/rethinkdb,lenstr/rethinkdb,wkennington/rethinkdb,yaolinz/rethinkdb,niieani/rethinkdb,gdi2290/rethinkdb,Wilbeibi/rethinkdb,KSanthanam/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb,mquandalle/rethinkdb,elkingtonmcb/rethinkdb,mquandalle/rethinkdb,tempbottle/rethinkdb,catroot/rethinkdb,RubenKelevra/rethinkdb,pap/rethinkdb,jesseditson/rethinkdb,robertjpayne/rethinkdb,rrampage/rethinkdb,victorbriz/rethinkdb,gavioto/rethinkdb,bchavez/rethinkdb,gdi2290/rethinkdb,tempbottle/rethinkdb,Wilbeibi/rethinkdb,sbusso/rethinkdb,robertjpayne/rethinkdb,gdi2290/rethinkdb,captainpete/rethinkdb,catroot/rethinkdb,tempbottle/rethinkdb,lenstr/rethinkdb,Wilbeibi/rethinkdb,marshall007/rethinkdb,JackieXie168/rethinkdb,mbroadst/rethinkdb,ajose01/rethinkdb,scripni/rethinkdb,Qinusty/rethinkdb,eliangidoni/rethinkdb,losywee/rethinkdb,rrampage/rethinkdb,alash3al/rethinkdb,Qinusty/rethinkdb,lenstr/rethinkdb,RubenKelevra/rethinkdb,catroot/rethinkdb,grandquista/rethinkdb,sebadiaz/rethinkdb,4talesa/rethinkdb,jmptrader/rethinkdb,wojons/rethinkdb,spblightadv/rethinkdb,RubenKelevra/rethinkdb,robertjpayne/rethinkdb,rrampage/rethinkdb,yakovenkodenis/rethinkdb