os/linux/elf.rb: Use the full path to patchelf for Linuxbrew
os/linux/elf.rb: Use the full path to patchelf for Linuxbrew

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