emulator: opengl: Support named pipes on Win32

This patch adds support for Win32 named pipes for the communication
channel between the Opengl renderer library and its clients.

Named pipes should be much faster than local TCP sockets on this
platform. Note that by default, TCP sockets are still used. The
emulator needs to call setStreamMode(STREAM_MODE_PIPE) to be able
to use these.

Change-Id: I86d36624cf2b7fdd50f41e1e43c908348dca4657
4 files changed