Support settable plt dir for dialyzer
Support settable plt dir for dialyzer

Allow rebar to use dialyzer plt files from an alternate directory
through the use of the REBAR_PLT_DIR environment variable.

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