diy: warn when detected name is an alias
diy: warn when detected name is an alias

cf. Homebrew/homebrew#22778.

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