erlc: fix comment
erlc: fix comment

test_compile/3 is used by eunit and qc, but the comment was only
referring to 'rebar eunit'.

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