keg-only: provide more info about system dupes
keg-only: provide more info about system dupes

System duplicates can now provide more information about why
they are included in Homebrew.

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