erlc: fixup log message
erlc: fixup log message

Using the filename as a prefix is less readable and inconsistent with
the other log messages.

Before:

DEBUG: src/foo.erl depends on...

After:

DEBUG: Dependencies of src/foo.erl ...

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