porting: mention segment accumulation in the porting guide
porting: mention segment accumulation in the porting guide

This needs more detail, but at least gives people a hint on the issue.

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