ndk-build: fix parsing of libtool libraries for multi arch
ndk-build: fix parsing of libtool libraries for multi arch

The libtool-clear-vars rule was duplicated and the incorrect
one was being used so cached variables were not cleared and
the libtool libraries in the new root were not parsed.

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