Rename a lot of HandlerState2 variables to HandlerState
Rename a lot of HandlerState2 variables to HandlerState

lpgauth/cowboy,hairyhum/cowboy,callsign-core/cowboy_hybi00,linearregression/cowboyku,LineMetrics/cowboy,LineMetrics/cowboy,ninenines/cowboy,dangjun625/cowboy,essen/cowboy,turtleDeng/cowboy,heroku/cowboy,yangchengjian/cowboy,K2InformaticsGmbH/cowboy,MSch/cowboy,callsign-core/cowboy_hybi00,CrankWheel/cowboy,cad627/cowboy,odo/cowboy,venkateshreddy/cowboy,kivra/cowboy,noname007/cowboy,Reimerei/cowboy,nviennot/cowboy,imdeps/cowboy,rabbitmq/cowboy,manastech/cowboy,paulperegud/cowboy,essen/cowboy,layerhq/cowboy,piboye/cowboy,yangchengjian/cowboy,heroku/cowboy,cad627/cowboy,heroku/cowboyku,manastech/cowboy,276361270/cowboy,binarin/cowboy,omusico/cowboy,bsmr-erlang/cowboy,layerhq/cowboy,piboye/cowboy,sile/cowboy,bobos/ecweb,chef/cowboy,unisontech/cowboy,lpgauth/cowboy,pap/cowboy,LineMetrics/cowboy,rbalint/pkg-erlang-cowboy,grahamrhay/cowboy,binarin/cowboy,unisontech/cowboy,ferd/cowboyku,acrispin/cowboy