Winsock Deprecated Warnings "Fix"

[CTxCB]

Prevents Winsock Deprecated Warnings, which currently appear because of deprecated functions are in use and require #define _WINSOCK_DEPRECATED_NO_WARNINGS, I've also made non_blocking an unsigned long instead of an int, because Visual Studio 2017 is throwing a compiler error trying to convert an int * to a u_long *.

[Themperror]

The define should be removed as the users need to know the functions being used are deprecated.
ioctlsocket (https://msdn.microsoft.com/en-us/library/windows/desktop/ms738573(v=vs.85).aspx )
does require u_longs* instead of int*, depending on compiler/platform they might be the same size (but not guaranteed) but it will always violate strict aliasing rules (signed / unsigned and long / int)

[CTxCB]

@Themperror I've made these an optional fix by adding a check for #define ZED_NET_IGNORE_DEPRECATION_WARNINGS, which could eventually cover deprecated function warnings in other platform's built-in socket code.