Skip the compiler version check on non-OSX systems
Skip the compiler version check on non-OSX systems

Closes homebrew/linuxbrew#5

davydden/linuxbrew,adamliter/linuxbrew,lvicentesanchez/linuxbrew,romejoe/linuxbrew,caputomarcos/linuxbrew,sarvex/linuxbrew,tjhei/linuxbrew,trskop/linuxbrew,tghs/linuxbrew,jack-and-rozz/linuxbrew,tbetbetbe/linuxbrew,winordie-47/linuxbrew1,dunn/linuxbrew,DoomHammer/linuxbrew,gnubila-france/linuxbrew,iggyvolz/linuxbrew,Linuxbrew/linuxbrew,IsmailM/linuxbrew,IsmailM/linuxbrew,reelsense/linuxbrew,dunn/linuxbrew,sjackman/linuxbrew,caputomarcos/linuxbrew,outcoldman/linuxbrew,caputomarcos/linuxbrew,davydden/linuxbrew,gnubila-france/linuxbrew,10sr/linuxbrew,digiter/linuxbrew,tdsmith/linuxbrew,Homebrew/linuxbrew,ebouaziz/linuxbrew,DoomHammer/linuxbrew,tghs/linuxbrew,iggyvolz/linuxbrew,saketkc/linuxbrew,hyokosdeveloper/linuxbrew,LeonB/linuxbrew,Gui13/linuxbrew,saketkc/linuxbrew,jlisic/linuxbrew,drbenmorgan/linuxbrew,Gui13/linuxbrew,digiter/linuxbrew,gnubila-france/linuxbrew,sublimino/linuxbrew,SuperNEMO-DBD/cadfaelbrew,tbetbetbe/linuxbrew,tomas/linuxbrew,jbaum98/linuxbrew,tjhei/linuxbrew,princeofdarkness76/linuxbrew,hyokosdeveloper/linuxbrew,tdsmith/linuxbrew,arcivanov/linuxbrew,tjhei/linuxbrew,jlisic/linuxbrew,telamonian/linuxbrew,SuperNEMO-DBD/cadfaelbrew,romejoe/linuxbrew,cbeck88/linuxbrew,princeofdarkness76/linuxbrew,afdnlw/linuxbrew,sublimino/linuxbrew,dunn/linuxbrew,tomas/linuxbrew,iggyvolz/linuxbrew,lvicentesanchez/linuxbrew,tghs/linuxbrew,caputomarcos/linuxbrew,LeonB/linuxbrew,adamliter/linuxbrew,danabrand/linuxbrew,romejoe/linuxbrew,ebouaziz/linuxbrew,sjackman/linuxbrew,amenk/linuxbrew,brevilo/linuxbrew,sarvex/linuxbrew,brevilo/linuxbrew,gcstang/linuxbrew,jwillemsen/linuxbrew,10sr/linuxbrew,cbeck88/linuxbrew,tdsmith/linuxbrew,danabrand/linuxbrew,ebouaziz/linuxbrew,adamliter/linuxbrew,trskop/linuxbrew,sarvex/linuxbrew,digiter/linuxbrew,afdnlw/linuxbrew,lvicentesanchez/linuxbrew,arcivanov/linuxbrew,tghs/linuxbrew,gcstang/linuxbrew,Gui13/linuxbrew,oneillkza/linuxbrew,gcstang/linuxbrew,tomas/linuxbrew,winordie-47/linuxbrew1,telamonian/linuxbrew,tghs/linuxbrew,amenk/linuxbrew,jwillemsen/linuxbrew,sjackman/linuxbrew,sublimino/linuxbrew,cbeck88/linuxbrew,Angeldude/linuxbrew,reelsense/linuxbrew,DoomHammer/linuxbrew,Homebrew/linuxbrew,Gui13/linuxbrew,Gui13/linuxbrew,sjackman/linuxbrew,jack-and-rozz/linuxbrew,saketkc/linuxbrew,trskop/linuxbrew,Linuxbrew/linuxbrew,ebouaziz/linuxbrew,10sr/linuxbrew,jbaum98/linuxbrew,oneillkza/linuxbrew,davydden/linuxbrew,hyokosdeveloper/linuxbrew,amenk/linuxbrew,saketkc/linuxbrew,outcoldman/linuxbrew,Homebrew/linuxbrew,outcoldman/linuxbrew,SuperNEMO-DBD/cadfaelbrew,reelsense/linuxbrew,tbetbetbe/linuxbrew,LeonB/linuxbrew,dunn/linuxbrew,brevilo/linuxbrew,jlisic/linuxbrew,sublimino/linuxbrew,brendanator/linuxbrew,oneillkza/linuxbrew,DoomHammer/linuxbrew,Angeldude/linuxbrew,IsmailM/linuxbrew,dholm/linuxbrew,Linuxbrew/linuxbrew,danabrand/linuxbrew,tbetbetbe/linuxbrew,drbenmorgan/linuxbrew,sarvex/linuxbrew,afdnlw/linuxbrew,davydden/linuxbrew,tdsmith/linuxbrew,lvicentesanchez/linuxbrew,tomas/linuxbrew,bukzor/linuxbrew,dholm/linuxbrew,amenk/linuxbrew,bukzor/linuxbrew,hyokosdeveloper/linuxbrew,brendanator/linuxbrew,dholm/linuxbrew,Angeldude/linuxbrew,afdnlw/linuxbrew,drbenmorgan/linuxbrew,Homebrew/linuxbrew,Linuxbrew/linuxbrew,oneillkza/linuxbrew,jwillemsen/linuxbrew,tdsmith/linuxbrew,drbenmorgan/linuxbrew,reelsense/linuxbrew,danabrand/linuxbrew,jbaum98/linuxbrew,digiter/linuxbrew,princeofdarkness76/linuxbrew,winordie-47/linuxbrew1,telamonian/linuxbrew,Angeldude/linuxbrew,arcivanov/linuxbrew,bukzor/linuxbrew,winordie-47/linuxbrew1,digiter/linuxbrew,jack-and-rozz/linuxbrew,bukzor/linuxbrew,jbaum98/linuxbrew,gnubila-france/linuxbrew,adamliter/linuxbrew,IsmailM/linuxbrew,brendanator/linuxbrew,SuperNEMO-DBD/cadfaelbrew