[Win32] Add win32-specific networking APIs

[Win32] Add win32-specific networking APIs

* Network Interface Monitor using GetAdaptersAddresses()
* WSARecvMsg() instead of recvmsg()
* WSARecvMsg() requires the use of WSAIoctl()
* Added function pointer to caglobals
* CAIPServer.c:sendData() supports partial sends

Change-Id: Icc0c38fa34fa8d50f8b4253990d83be5ae3cdd5c
Signed-off-by: Daniel Ferguson <daniel.j.ferguson@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/5509
Reviewed-by: Dave Thaler <dthaler@microsoft.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: David Antler <david.a.antler@intel.com>