query: Document that the first allocator in the allocation query should allow mapping to system memory
query: Document that the first allocator in the allocation query should allow mapping to system memory

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