Change default HOMEBREW_LOGS on Linuxbrew
Change default HOMEBREW_LOGS on Linuxbrew

The defalt log directory is ~/.cache/Homebrew/Logs

See Homebrew/linuxbrew#406
Closes Homebrew/linuxbrew#278

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