ws2_32/tests: Add a simple test for WSAProviderConfigChange(). This test replicates what Microsoft-MPI and its backend NetworkDirect (ND) depend on. Signed-off-by: Dmitry Timoshkov <dmitry@baikal.ru>
ws2_32: Return a socket from WSAProviderConfigChange() stub. Signed-off-by: Dmitry Timoshkov <dmitry@baikal.ru>