linux: set --host for autotools when cross-compiling
linux: set --host for autotools when cross-compiling

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