Change method of patching the Makefile
    
    Simply use sed to change `install` to `install -p` and disable
    %make_install from rebuilding the binary.
    
    This way, we don't have to rebase the patch each release. This also
    changes the %gobuild output path so %make_install can install the binary
    instead of us having to do it manually.
    
    [skip changelog]