win32: add new API to .def file
win32: add new API to .def file

Fixes 'make check'.

krieger-od/gstreamer,lovebug356/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,centricular/gstreamer,krieger-od/gstreamer,centricular/gstreamer,cablelabs/gstreamer,jpakkane/gstreamer,surround-io/gstreamer,ensonic/gstreamer,lubosz/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,jpxiong/gstreamer,lovebug356/gstreamer,Lachann/gstreamer,krieger-od/gstreamer,jpxiong/gstreamer,Lachann/gstreamer,shelsonjava/gstreamer,mparis/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,krichter722/gstreamer,cablelabs/gstreamer,centricular/gstreamer,shelsonjava/gstreamer,lubosz/gstreamer,ensonic/gstreamer,justinjoy/gstreamer,ensonic/gstreamer,cfoch/gstreamer,krichter722/gstreamer,lubosz/gstreamer,collects/gstreamer,centricular/gstreamer,mparis/gstreamer,jpxiong/gstreamer,lubosz/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,jpxiong/gstreamer,krichter722/gstreamer,ensonic/gstreamer,centricular/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,krieger-od/gstreamer,Lachann/gstreamer,collects/gstreamer,lovebug356/gstreamer,StreamUtils/gstreamer,mparis/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,surround-io/gstreamer,surround-io/gstreamer,cfoch/gstreamer,mparis/gstreamer,cfoch/gstreamer,justinjoy/gstreamer,justinjoy/gstreamer,collects/gstreamer,collects/gstreamer,mparis/gstreamer,jpakkane/gstreamer,ensonic/gstreamer,Lachann/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,StreamUtils/gstreamer,cablelabs/gstreamer,krieger-od/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,cablelabs/gstreamer,lubosz/gstreamer,Lachann/gstreamer,jpakkane/gstreamer,collects/gstreamer