git: Use the brewed openssl and curl for Linuxbrew
git: Use the brewed openssl and curl for Linuxbrew

Closes Homebrew/linuxbrew#713

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