formulary: fix constant redefined warning.
formulary: fix constant redefined warning.

EricFromCanada/brew,nandub/brew,vitorgalvao/brew,Homebrew/brew,claui/brew,EricFromCanada/brew,EricFromCanada/brew,claui/brew,JCount/brew,nandub/brew,vitorgalvao/brew,EricFromCanada/brew,vitorgalvao/brew,sjackman/homebrew,JCount/brew,Homebrew/brew,sjackman/homebrew,Homebrew/brew,sjackman/homebrew,nandub/brew,claui/brew,vitorgalvao/brew,sjackman/homebrew,MikeMcQuaid/brew,MikeMcQuaid/brew,nandub/brew,JCount/brew,claui/brew,JCount/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,Homebrew/brew