win32: Update .def file for new API
win32: Update .def file for new API

centricular/gstreamer,StreamUtils/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,krichter722/gstreamer,centricular/gstreamer,StreamUtils/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,centricular/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,shelsonjava/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,krichter722/gstreamer,centricular/gstreamer,jpxiong/gstreamer,centricular/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,StreamUtils/gstreamer