merge-homebrew: New dev command for Linuxbrew
merge-homebrew: New dev command for Linuxbrew

Merge branch homebrew/master into linuxbrew/master

Linuxbrew/brew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,hanxue/linuxbrew,rwhogg/brew,Linuxbrew/brew,hanxue/linuxbrew,rwhogg/brew,maxim-belkin/brew,rwhogg/brew,maxim-belkin/brew,Linuxbrew/brew