dev-cmd/bottle: don't gen `all` bottles if a bottle spec already exists
dev-cmd/bottle: don't gen `all` bottles if a bottle spec already exists

Homebrew/brew,nandub/brew,EricFromCanada/brew,nandub/brew,MikeMcQuaid/brew,EricFromCanada/brew,nandub/brew,EricFromCanada/brew,JCount/brew,nandub/brew,MikeMcQuaid/brew,Homebrew/brew,JCount/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,Homebrew/brew,Homebrew/brew,JCount/brew,JCount/brew,EricFromCanada/brew