Should work for most modern x86 Linux systems.
The only dependency is glibc, but it has versioned symbols, so since I built this release in Ubuntu 16.04, systems with older glibc might not work, but anything newer should. (Well, until glibc decides to break backwards compatibility, which I don't think is going to happen any time soon.)
Just unpack the libspeedhack.tar.gz anywhere (where binary execution is allowed, e.g. your $HOME probably would work) and run libspeedhack/speedhack as per the "How to use" section in the README.