segment: fix include order to get config.h before _mingw.h
segment: fix include order to get config.h before _mingw.h

config.h must always be included before any other includes, either
directly or indirectly via gst_private.h. Fixes #585733.

mparis/gstreamer,cablelabs/gstreamer,surround-io/gstreamer,lovebug356/gstreamer,lovebug356/gstreamer,mrchapp/gstreamer,ensonic/gstreamer,StreamUtils/gstreamer,mrchapp/gstreamer,mparis/gstreamer,jpakkane/gstreamer,ylatuya/gstreamer,surround-io/gstreamer,ahmedammar/platform_external_gst_gstreamer,StreamUtils/gstreamer,Lachann/gstreamer,lovebug356/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,jpxiong/gstreamer,lubosz/gstreamer,magcius/gstreamer,Distrotech/gstreamer,lubosz/gstreamer,cfoch/gstreamer,lovebug356/gstreamer,krieger-od/gstreamer,cablelabs/gstreamer,cfoch/gstreamer,drothlis/gstreamer,ensonic/gstreamer,drothlis/gstreamer,StreamUtils/gstreamer,krichter722/gstreamer,mrchapp/gstreamer,ahmedammar/platform_external_gst_gstreamer,ylatuya/gstreamer,mparis/gstreamer,collects/gstreamer,magcius/gstreamer,ylatuya/gstreamer,jpxiong/gstreamer,Lachann/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,magcius/gstreamer,justinjoy/gstreamer,lubosz/gstreamer,drothlis/gstreamer,jpakkane/gstreamer,centricular/gstreamer,mrchapp/gstreamer,jpakkane/gstreamer,collects/gstreamer,krieger-od/gstreamer,cfoch/gstreamer,justinjoy/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,krieger-od/gstreamer,mrchapp/gstreamer,cfoch/gstreamer,collects/gstreamer,mparis/gstreamer,krichter722/gstreamer,centricular/gstreamer,drothlis/gstreamer,shelsonjava/gstreamer,ahmedammar/platform_external_gst_gstreamer,centricular/gstreamer,surround-io/gstreamer,krieger-od/gstreamer,krichter722/gstreamer,jpakkane/gstreamer,ensonic/gstreamer,centricular/gstreamer,mparis/gstreamer,shelsonjava/gstreamer,ahmedammar/platform_external_gst_gstreamer,ahmedammar/platform_external_gst_gstreamer,lovebug356/gstreamer,ensonic/gstreamer,cfoch/gstreamer,Lachann/gstreamer,justinjoy/gstreamer,jpxiong/gstreamer,centricular/gstreamer,ylatuya/gstreamer,jpxiong/gstreamer,Distrotech/gstreamer,Lachann/gstreamer,Distrotech/gstreamer,magcius/gstreamer,collects/gstreamer,ylatuya/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,krichter722/gstreamer,lubosz/gstreamer,drothlis/gstreamer,cablelabs/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,magcius/gstreamer,Distrotech/gstreamer,cablelabs/gstreamer,collects/gstreamer,lubosz/gstreamer,Distrotech/gstreamer,ensonic/gstreamer,shelsonjava/gstreamer,Lachann/gstreamer