libs/gst/net/: Make stuff compile on windows. Fixes #345295.

libs/gst/net/: Make stuff compile on windows. Fixes #345295.

Original commit message from CVS:
* libs/gst/net/gstnetclientclock.c: (inet_aton),
(gst_net_client_clock_init), (gst_net_client_clock_finalize),
(gst_net_client_clock_do_select), (gst_net_client_clock_new):
* libs/gst/net/gstnetclientclock.h:
* libs/gst/net/gstnettimepacket.c: (gst_net_time_packet_send):
* libs/gst/net/gstnettimepacket.h:
* libs/gst/net/gstnettimeprovider.c: (inet_aton),
(gst_net_time_provider_init), (gst_net_time_provider_finalize),
(gst_net_time_provider_thread), (gst_net_time_provider_new):
* libs/gst/net/gstnettimeprovider.h:
Make stuff compile on windows. Fixes #345295.