Fixes Homebrew/homebrew#168 - don't show multiple copies of the same dep.
Fixes Homebrew/homebrew#168 - don't show multiple copies of the same dep.

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