* Merge from debian unstable. (LP:# 847552) Remaining changes: - Use mozilla-flashplugin as the alternative for now - Set alternative priority to 50 so that it matches Adobe Flash's priority - Change xulrunner-dev build dep to firefox-dev - add libav 0.7 patch * Drop the following changes obsoleted by the Debian updates - Add build-dep on libspeexdsp-dev and libxv-dev; Fixes FTBFS - Remove configure code for libpthread check; Fixes FTBFS w/multiarch paths