Imported Upstream version 2.5
Merge tag 'upstream/2.5'

Upstream version 2.5
update debian/copyright
add new symbols
disable rtmp on powerpcspe and sparc64 as librtmp-dev is uninstallable
enable x265 on mips, mipsel and powerpc
disable opencv on powerpcspe
prepare new upload
fix typo in changelog

Signed-off-by: Niv Sardi <xaiki@evilgiggle.com>