Fix libvpx build on OSX/PPC
Fix libvpx build on OSX/PPC

shoreflyer/cerbero,BigBrother-International/gst-cerbero,ikonst/cerbero,EricssonResearch/cerbero,superdump/cerbero,nicolewu/cerbero,AlertMe/cerbero,nirbheek/cerbero,ikonst/cerbero,ylatuya/cerbero,OptoFidelity/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,ford-prefect/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,AlertMe/cerbero,lubosz/cerbero,nirbheek/cerbero,BigBrother-International/gst-cerbero,nirbheek/cerbero,justinjoy/cerbero,EricssonResearch/cerbero,jackjansen/cerbero-2013,ford-prefect/cerbero,multipath-rtp/cerbero,ramaxlo/cerbero,GStreamer/cerbero,jackjansen/cerbero-2013,AlertMe/cerbero,flexVDI/cerbero,shoreflyer/cerbero,nirbheek/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,ylatuya/cerbero,atsushieno/cerbero,sdroege/cerbero,sdroege/cerbero,EricssonResearch/cerbero,centricular/cerbero,flexVDI/cerbero,ikonst/cerbero,shoreflyer/cerbero,multipath-rtp/cerbero,lubosz/cerbero,jackjansen/cerbero-2013,jackjansen/cerbero-2013,superdump/cerbero,OptoFidelity/cerbero,davibe/cerbero,davibe/cerbero,atsushieno/cerbero,AlertMe/cerbero,centricular/cerbero,GStreamer/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,nzjrs/cerbero,ylatuya/cerbero,shoreflyer/cerbero,justinjoy/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,justinjoy/cerbero,GStreamer/cerbero,centricular/cerbero,nirbheek/cerbero-old,brion/cerbero,fluendo/cerbero,lubosz/cerbero,shoreflyer/cerbero,ikonst/cerbero,OptoFidelity/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,jackjansen/cerbero,sdroege/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,brion/cerbero,nicolewu/cerbero,fluendo/cerbero,GStreamer/cerbero,centricular/cerbero,nzjrs/cerbero,jackjansen/cerbero,atsushieno/cerbero,justinjoy/cerbero,davibe/cerbero,ikonst/cerbero,atsushieno/cerbero,ramaxlo/cerbero,sdroege/cerbero,superdump/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,AlertMe/cerbero,ramaxlo/cerbero,nzjrs/cerbero,jackjansen/cerbero,ylatuya/cerbero,cee1/cerbero-mac,jackjansen/cerbero,nicolewu/cerbero,cee1/cerbero-mac,BigBrother-International/gst-cerbero,atsushieno/cerbero,brion/cerbero,flexVDI/cerbero,davibe/cerbero,BigBrother-International/gst-cerbero,nirbheek/cerbero-old,centricular/cerbero,fluendo/cerbero,multipath-rtp/cerbero,flexVDI/cerbero,cee1/cerbero-mac,jackjansen/cerbero-2013,BigBrother-International/gst-cerbero,superdump/cerbero,multipath-rtp/cerbero,EricssonResearch/cerbero,nirbheek/cerbero-old,ramaxlo/cerbero,flexVDI/cerbero,nzjrs/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,brion/cerbero,lubosz/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,OptoFidelity/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,nirbheek/cerbero-old,EricssonResearch/cerbero,fluendo/cerbero,sdroege/cerbero,GStreamer/cerbero,ramaxlo/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,ford-prefect/cerbero,brion/cerbero,fluendo/cerbero,ford-prefect/cerbero,cee1/cerbero-mac,nzjrs/cerbero,multipath-rtp/cerbero