Don't ignore interupts during Formula.system
Don't ignore interupts during Formula.system

As I understand it (I tested too), signal propogation is handled by the parent Ruby process. However this was working mostly anyway. So I don't fully understand what is going on. However this seems to not hang in Process.wait where it was before for one test case.

vitorgalvao/brew,EricFromCanada/brew,gregory-nisbet/brew,muellermartin/dist,jmsundar/brew,mahori/brew,jmsundar/brew,amar-laksh/brew_sudo,rwhogg/brew,reitermarkus/brew,claui/brew,staticfloat/brew,reitermarkus/brew,bfontaine/brew,pseudocody/brew,sjackman/homebrew,mgrimes/brew,tonyg/homebrew,sjackman/homebrew,MikeMcQuaid/brew,bfontaine/brew,vitorgalvao/brew,bfontaine/brew,maxim-belkin/brew,hanxue/linuxbrew,DomT4/brew,palxex/brew,konqui/brew,AnastasiaSulyagina/brew,MikeMcQuaid/brew,pseudocody/brew,pseudocody/brew,maxim-belkin/brew,EricFromCanada/brew,ilovezfs/brew,zmwangx/brew,Homebrew/brew,aw1621107/brew,EricFromCanada/brew,nandub/brew,Linuxbrew/brew,sjackman/homebrew,maxim-belkin/brew,mahori/brew,JCount/brew,Linuxbrew/brew,amar-laksh/brew_sudo,hanxue/linuxbrew,mistydemeo/homebrew,AnastasiaSulyagina/brew,konqui/brew,Homebrew/brew,gordonmcshane/homebrew,zmwangx/brew,MikeMcQuaid/brew,reelsense/brew,muellermartin/dist,AnastasiaSulyagina/brew,ilovezfs/brew,mistydemeo/homebrew,konqui/brew,reitermarkus/brew,vitorgalvao/brew,Linuxbrew/brew,konqui/brew,mistydemeo/homebrew,claui/brew,JCount/brew,rwhogg/brew,gregory-nisbet/brew,tonyg/homebrew,muellermartin/dist,reelsense/brew,nandub/brew,gordonmcshane/homebrew,Homebrew/brew,alyssais/brew,mahori/brew,rwhogg/brew,sjackman/homebrew,aw1621107/brew,JCount/brew,DomT4/brew,toonetown/homebrew,toonetown/homebrew,staticfloat/brew,toonetown/homebrew,reelsense/brew,zmwangx/brew,Linuxbrew/brew,MikeMcQuaid/brew,aw1621107/brew,alyssais/brew,JCount/brew,ilovezfs/brew,DomT4/brew,mahori/brew,mgrimes/brew,EricFromCanada/brew,tonyg/homebrew,nandub/brew,Homebrew/brew,jmsundar/brew,claui/brew,staticfloat/brew,vitorgalvao/brew,DomT4/brew,alyssais/brew,claui/brew,amar-laksh/brew_sudo,mgrimes/brew,hanxue/linuxbrew,palxex/brew,nandub/brew,gregory-nisbet/brew,palxex/brew,reitermarkus/brew,gordonmcshane/homebrew