Allow conversion of Dependencies to Array
Allow conversion of Dependencies to Array

This is needed for the intersection code in `brew deps` to work right,
but can hopefully be refactored away somehow eventually.

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