Add instances to ErrCode, CFamily, CSocketType, and CProtocol to make them more number-like
Winsock.Bindings: incorporate mswsock loading into loadWinsock
Rename IOCP.Winsock.Bindings to IOCP.Winsock.Load
IOCP.Winsock.Load: nest Types section under Mswsock in module header
Move foreign imports from IOCP.Winsock.Load to IOCP.Winsock.Bindings
IOCP.Winsock.Types: add WSABUF, LPWSABUF
IOCP.Winsock: switch 'send' to call the c_WSASend binding directly, and require the caller to allocate the WSABUF