Improve rebar.bat
Improve rebar.bat

Add support for invoking rebar from other than current directory.
For example: ..\rebar create-node nodeid=mysample

requires rebar.bar and rebar (escript) to be in the same directory.

linearregression/rebar3,rebar/rebar,CMoH/rebar,processone/rebar3,wcy123/rebar,rebar/rebar3,paulo-ferraz-oliveira/rebar,lrascao/rebar,norton/rebar,kellymclaughlin/rebar3,evnix/rebar,surik/rebar3,blt/rebar3,fauxsoup/rebar3,lrascao/rebar,lpgauth/rebar,zugolosian/rebar3,fishcakez/rebar3,shkumagai/rebar,lrascao/rebar,csyangchen/rebar,cloudant/couchdb-rebar,oubiwann/rebar,cloudant/couchdb-rebar,K2InformaticsGmbH/rebar,platinumthinker/rebar,choptastic/rebar,cloudant/couchdb-rebar,jacktang/rebar,beni55/rebar-1,surik/rebar3,lpgauth/rebar,processone/rebar3,GabrielNicolasAvellaneda/rebar,syl20bnr/rebar,sile/rebar3,dcarastan/rebar,lrascao/rebar,syl20bnr/rebar,vladdu/rebar3,beni55/rebar,norton/rebar3,CMoH/rebar,lrascao/rebar,macintux/rebar,scatterbrain/rebar,heroku/rebar,GabrielNicolasAvellaneda/rebar,norton/rebar,beni55/rebar,rebar/rebar,basho/rebar,jbalint/rebar3,evnix/rebar,GabrielNicolasAvellaneda/rebar,K2InformaticsGmbH/rebar,matwey/rebar,matwey/rebar,syl20bnr/rebar,project-fifo/rebar3,macintux/rebar,apache/couchdb-rebar,paulo-ferraz-oliveira/rebar,fauxsoup/rebar3,K2InformaticsGmbH/rebar,zugolosian/rebar3,walrusVision/rebar3,thomasbhatia/rebar,apache/couchdb-rebar,SiDen/rebar,matwey/rebar,norton/rebar,ferd/rebar3,bsmr-erlang/rebar,lrascao/rebar3,linearregression/rebar3,apache/couchdb-rebar,beni55/rebar,benoitc/rebar3,deadok22/rebar,macintux/rebar,shkumagai/rebar,scatterbrain/rebar,csyangchen/rebar,jbalint/rebar3,jacktang/rebar,RubberCthulhu/rebar,matwey/rebar,wcy123/rebar,SiDen/rebar,rebar/rebar,fabiankrol/rebar3,sile/rebar3,heroku/rebar,RubberCthulhu/rebar,evnix/rebar,rebar/rebar3,dcarastan/rebar,SiDen/rebar,platinumthinker/rebar,norton/rebar,tsloughter/rebar3,K2InformaticsGmbH/rebar,oubiwann/rebar,fabiankrol/rebar3,scatterbrain/rebar,thomasbhatia/rebar,saleyn/rebar3,shkumagai/rebar,bsmr-erlang/rebar,matwey/rebar,K2InformaticsGmbH/rebar,project-fifo/rebar3,bsmr-erlang/rebar,djnym/rebar3,paulo-ferraz-oliveira/rebar,bsmr-erlang/rebar,blt/rebar3,jacktang/rebar,choptastic/rebar,beni55/rebar-1,CMoH/rebar,thomasbhatia/rebar,csyangchen/rebar,deadok22/rebar,oubiwann/rebar,basho/rebar,erlang/rebar3,benoitc/rebar3,walrusVision/rebar3,dcarastan/rebar,platinumthinker/rebar,choptastic/rebar,lpgauth/rebar