create_tarball.sh: Add support for GNU tar on Linux
create_tarball.sh: Add support for GNU tar on Linux

sdroege/cerbero,sdroege/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero,ramaxlo/cerbero,AlertMe/cerbero,EricssonResearch/cerbero,shoreflyer/cerbero,ramaxlo/cerbero,ramaxlo/cerbero,multipath-rtp/cerbero,EricssonResearch/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero,shoreflyer/cerbero,ramaxlo/cerbero,sdroege/cerbero,AlertMe/cerbero,ramaxlo/cerbero,ikonst/cerbero,shoreflyer/cerbero,ikonst/cerbero,shoreflyer/cerbero,AlertMe/cerbero,ikonst/cerbero,sdroege/cerbero,multipath-rtp/cerbero,AlertMe/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero,AlertMe/cerbero,sdroege/cerbero,shoreflyer/cerbero,ikonst/cerbero,ikonst/cerbero