Changed ReQL test regression/718.yaml to test that index creation functions _may_ reference external variables.
Changed ReQL test regression/718.yaml to test that index creation functions _may_ reference external variables.

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