Add rebar_utils:find_files_by_ext/2,3
Add rebar_utils:find_files_by_ext/2,3

This finds files by extension, avoiding resource fork files
in Mac OS X.

jacktang/rebar,lrascao/rebar,scatterbrain/rebar,beni55/rebar,platinumthinker/rebar,macintux/rebar,apache/couchdb-rebar,K2InformaticsGmbH/rebar,bsmr-erlang/rebar,shkumagai/rebar,norton/rebar,norton/rebar,SiDen/rebar,choptastic/rebar,RubberCthulhu/rebar,lrascao/rebar,rebar/rebar,bsmr-erlang/rebar,paulo-ferraz-oliveira/rebar,bsmr-erlang/rebar,oubiwann/rebar,matwey/rebar,GabrielNicolasAvellaneda/rebar,norton/rebar,evnix/rebar,shkumagai/rebar,matwey/rebar,shkumagai/rebar,CMoH/rebar,choptastic/rebar,csyangchen/rebar,apache/couchdb-rebar,matwey/rebar,scatterbrain/rebar,cloudant/couchdb-rebar,beni55/rebar,SiDen/rebar,K2InformaticsGmbH/rebar,bsmr-erlang/rebar,oubiwann/rebar,lpgauth/rebar,paulo-ferraz-oliveira/rebar,K2InformaticsGmbH/rebar,beni55/rebar,dcarastan/rebar,evnix/rebar,oubiwann/rebar,platinumthinker/rebar,jacktang/rebar,K2InformaticsGmbH/rebar,CMoH/rebar,cloudant/couchdb-rebar,lpgauth/rebar,GabrielNicolasAvellaneda/rebar,rebar/rebar,RubberCthulhu/rebar,matwey/rebar,platinumthinker/rebar,scatterbrain/rebar,paulo-ferraz-oliveira/rebar,CMoH/rebar,choptastic/rebar,macintux/rebar,K2InformaticsGmbH/rebar,lrascao/rebar,csyangchen/rebar,csyangchen/rebar,evnix/rebar,lpgauth/rebar,lrascao/rebar,dcarastan/rebar,SiDen/rebar,apache/couchdb-rebar,macintux/rebar,dcarastan/rebar,norton/rebar,rebar/rebar,matwey/rebar,lrascao/rebar,jacktang/rebar,GabrielNicolasAvellaneda/rebar,cloudant/couchdb-rebar