Add new global flag 'debug_info' to erlc_compiler
Add new global flag 'debug_info' to erlc_compiler

Using rebar's commandline, enable/disable 'debug_info' for
compilation. This feature if added to all rebar compilers could help
simplify and standardize this common use case for all rebar build
targets.

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