Tab->4space efd_*.inc
Tab-> space hash.c
Re-enable as much of the IPC scaffolding on Windows up to the point where only unix domain socket code is commented out.
See nn_bipc_start_listening nn_cipc_start_connecting
Windows: add ipc transport
Windows: add ipc transport
additions for win32
Add WSAESOCKTNOSUPPORT in nn.h and err.c
usock_win.h: Introduce AF_NN_NAMEDPIPE to track named pipes vs sockets
usock_win.inc: Implement nn_pipe_start for Windows.
bipc.c: Add nn_bipc_start_listening implementation.
cpic.c: Add nn_cipc_start_connecting implementation.
ipc.c: Add ping pong test case for IPC.