A library that implements most efficient socket to socket
data transfer loops for proxy servers on all operating systems.
On GNU/Linux, it exports the zero-copy system call c_splice()
(http://en.wikipedia.org/wiki/Splice_(system_call)#Requirements)
in System.IO.Splice.Linux.
On other operating systems, it only exports a portable Haskell
implementation.
A unified sockets API for all operating systems is available in
Network.Socket.Splice.
PackagingOnly changes are made for quality assurance reasons.