gcc 5.1.0: Depends on zlib for Linuxbrew
gcc 5.1.0: Depends on zlib for Linuxbrew

Fix error: zlib.h: No such file or directory

forevergenin/homebrew-core,rwhogg/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,forevergenin/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core