[ Andreas Cadhalpun ] * Build libavcodec-extra flavor. * Add encdec-extra autopkgtest for the libavcodec-extra flavor. * Add lib*-dev and libav-tools-links packages. * Drop README.Debian. * Remove bogus apng-ffm autopkg test. * Explicitly build-depend on liblzma-dev used by the tiff decoder. * Use the pkg-multimedia repository for the Vcs links. * Use the plain lib*-dev packages for the test dependencies. * Disable libssh on sparc due to #790067. * Remove temporary gdb dependency on sparc64. * Enable openal on sparc64.
[ Carl Eugen Hoyos ] * Disable x265 on alpha due to #789807.