config: fix per5lib path path on windows
config: fix per5lib path path on windows

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