Fix backwards compatibility with authKey in javascript driver.
Fix backwards compatibility with authKey in javascript driver.

OTS by @danielmewes

bchavez/rethinkdb,JackieXie168/rethinkdb,jmptrader/rethinkdb,eliangidoni/rethinkdb,bchavez/rethinkdb,mbroadst/rethinkdb,JackieXie168/rethinkdb,mbroadst/rethinkdb,mbroadst/rethinkdb,catroot/rethinkdb,bchavez/rethinkdb,bpradipt/rethinkdb,grandquista/rethinkdb,eliangidoni/rethinkdb,mbroadst/rethinkdb,bpradipt/rethinkdb,grandquista/rethinkdb,robertjpayne/rethinkdb,mbroadst/rethinkdb,catroot/rethinkdb,eliangidoni/rethinkdb,jmptrader/rethinkdb,bchavez/rethinkdb,jmptrader/rethinkdb,JackieXie168/rethinkdb,robertjpayne/rethinkdb,grandquista/rethinkdb,JackieXie168/rethinkdb,bpradipt/rethinkdb,bpradipt/rethinkdb,catroot/rethinkdb,JackieXie168/rethinkdb,grandquista/rethinkdb,bpradipt/rethinkdb,bchavez/rethinkdb,JackieXie168/rethinkdb,grandquista/rethinkdb,jmptrader/rethinkdb,grandquista/rethinkdb,grandquista/rethinkdb,bchavez/rethinkdb,catroot/rethinkdb,catroot/rethinkdb,bpradipt/rethinkdb,catroot/rethinkdb,JackieXie168/rethinkdb,bpradipt/rethinkdb,catroot/rethinkdb,eliangidoni/rethinkdb,robertjpayne/rethinkdb,robertjpayne/rethinkdb,robertjpayne/rethinkdb,mbroadst/rethinkdb,bchavez/rethinkdb,mbroadst/rethinkdb,eliangidoni/rethinkdb,jmptrader/rethinkdb,JackieXie168/rethinkdb,robertjpayne/rethinkdb,JackieXie168/rethinkdb,mbroadst/rethinkdb,eliangidoni/rethinkdb,jmptrader/rethinkdb,robertjpayne/rethinkdb,eliangidoni/rethinkdb,jmptrader/rethinkdb,robertjpayne/rethinkdb,eliangidoni/rethinkdb,bpradipt/rethinkdb,grandquista/rethinkdb,grandquista/rethinkdb,bchavez/rethinkdb,mbroadst/rethinkdb,catroot/rethinkdb,eliangidoni/rethinkdb,bchavez/rethinkdb,bpradipt/rethinkdb,jmptrader/rethinkdb,robertjpayne/rethinkdb