add libstdc++ to mac whitelist libs
add libstdc++ to mac whitelist libs

lvfeng1130/omnibus,pskrz/omnibus,Altiscale/omnibus,DataDog/omnibus-ruby,higanworks/omnibus,sh9189/omnibus,szechyjs/omnibus,rhass/omnibus,rapid7/omnibus,ashhher3/omnibus,lvfeng1130/omnibus,intfrr/omnibus,adamleff/omnibus,hugosato/omnibus,sh9189/omnibus,Altiscale/omnibus,lvfeng1130/omnibus,servebox/omnibus,intfrr/omnibus,higanworks/omnibus,DataDog/omnibus-ruby,chef/omnibus,rapid7/omnibus,jamesn/omnibus,pskrz/omnibus,szechyjs/omnibus,servebox/omnibus,hugosato/omnibus,rhass/omnibus,sh9189/omnibus,intfrr/omnibus,adamleff/omnibus,DataDog/omnibus-ruby,Scalr/omnibus,pskrz/omnibus,szechyjs/omnibus,mattray/omnibus,hugosato/omnibus,jamesn/omnibus,servebox/omnibus,jamesn/omnibus,adamleff/omnibus,chef/omnibus,3ofcoins/chef-omnibus,mattray/omnibus,ashhher3/omnibus,strangelittlemonkey/omnibus,mattray/omnibus,ashhher3/omnibus,3ofcoins/chef-omnibus,rhass/omnibus,Scalr/omnibus,higanworks/omnibus,strangelittlemonkey/omnibus,rapid7/omnibus,Scalr/omnibus,Altiscale/omnibus,chef/omnibus,strangelittlemonkey/omnibus,3ofcoins/chef-omnibus