backendutils: use endl from the std namespace (silences a compiler warning)
mythavutil: make a couple of functions static (silences compiler warnings)
AVFormatWriter: silence some depreciated compiler warnings

avcodec_free_frame() -> av_frame_free()
avcodec_alloc_frame() -> av_frame_alloc()
metadatagrabber: make a couple functions static (silences compiler warnings)
ScriptableImage: fix converting 'false' to pointer type 'QObject*' warning
messageutils: use endl from the std namespace (silences compiler warnings)
Squares: rename size variable to avoid conflict with the one in the base class
FlacEncoder: initialise inputin in the ctor
EditAlbumartDialog: remove duplicate declaration of m_DoneButton
Piano: fix a possible null pointer dereference of node
VorbisEncoder: initialise op in the ctor
Merge remote-tracking branch 'upstream/master'