Only add Windows libraries on Windows platform when compiling with CMake.
Only add Windows libraries on Windows platform when compiling with CMake.

jiangjianping/ortp,videomedicine/oRTP,Distrotech/oRTP,Distrotech/oRTP,wugh7125/ortp,Linphone-sync/oRTP,VTCSecureLLC/ortp,wugh7125/ortp,jiangjianping/ortp,wugh7125/ortp,caizw/ortp,VTCSecureLLC/ortp,VTCSecureLLC/ortp,Linphone-sync/oRTP,carpikes/ortp,caizw/ortp,Linphone-sync/oRTP,Distrotech/oRTP,carpikes/ortp,videomedicine/oRTP,videomedicine/oRTP,caizw/ortp,carpikes/ortp,jiangjianping/ortp