scm/git: make --homebrew=print-path absolute.
scm/git: make --homebrew=print-path absolute.

This ensures that the output is always a fully-resolved path.

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