Add iterate mutex for future use
Add iterate mutex for future use

Original commit message from CVS:
Add iterate mutex for future use

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