flac: enable build of static library in configure
flac: enable build of static library in configure

brion/cerbero,GStreamer/cerbero,GStreamer/cerbero,EricssonResearch/cerbero,AlertMe/cerbero,ramaxlo/cerbero,shoreflyer/cerbero,sdroege/cerbero,ikonst/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,nzjrs/cerbero,atsushieno/cerbero,OptoFidelity/cerbero,lubosz/cerbero,lubosz/cerbero,ramaxlo/cerbero,superdump/cerbero,ford-prefect/cerbero,OptoFidelity/cerbero,fluendo/cerbero,nirbheek/cerbero-old,multipath-rtp/cerbero,justinjoy/cerbero,EricssonResearch/cerbero,shoreflyer/cerbero,ramaxlo/cerbero,OptoFidelity/cerbero,AlertMe/cerbero,superdump/cerbero,nzjrs/cerbero,nirbheek/cerbero,GStreamer/cerbero,centricular/cerbero,jackjansen/cerbero,lubosz/cerbero,nirbheek/cerbero-old,GStreamer/cerbero,flexVDI/cerbero,ford-prefect/cerbero,AlertMe/cerbero,flexVDI/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,justinjoy/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,ramaxlo/cerbero,atsushieno/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,flexVDI/cerbero,nirbheek/cerbero-old,shoreflyer/cerbero,sdroege/cerbero,shoreflyer/cerbero,ramaxlo/cerbero,brion/cerbero,fluendo/cerbero,fluendo/cerbero,nirbheek/cerbero,nirbheek/cerbero,atsushieno/cerbero,AlertMe/cerbero,lubosz/cerbero,ikonst/cerbero,GStreamer/cerbero,multipath-rtp/cerbero,flexVDI/cerbero,ikonst/cerbero,flexVDI/cerbero,justinjoy/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,brion/cerbero,atsushieno/cerbero,nirbheek/cerbero-old,multipath-rtp/cerbero,EricssonResearch/cerbero,jackjansen/cerbero,jackjansen/cerbero,multipath-rtp/cerbero,centricular/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,brion/cerbero,atsushieno/cerbero,nzjrs/cerbero,EricssonResearch/cerbero,EricssonResearch/cerbero,OptoFidelity/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,AlertMe/cerbero,superdump/cerbero,centricular/cerbero,nzjrs/cerbero,sdroege/cerbero,ikonst/cerbero,nirbheek/cerbero,nzjrs/cerbero,superdump/cerbero,brion/cerbero,centricular/cerbero,jackjansen/cerbero,ikonst/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,justinjoy/cerbero,sdroege/cerbero,ford-prefect/cerbero,centricular/cerbero,sdroege/cerbero,fluendo/cerbero,multipath-rtp/cerbero,ford-prefect/cerbero,shoreflyer/cerbero,fluendo/cerbero