upipe_avfsink: fix memleak
upipe_avcenc: add ratio, vbv, better pts handling
Merge branch 'master' of git://github.com/cmassiot/upipe
Add UPROBE_LOG_VERBOSE

More verbose than debug, should be used for very
frequent debug messages (on a per-uref basis)
upipe-av: fix upipe_av_codecs.h generation

Fix incorrect upipe_av_codecs.h generation on systems with
several versions of libavcodec and alternate PKG_CONFIG_PATH.
upipe_avfsrc: fix inverted fps
upipe-av: fix segfault, add octetrate

Dont segfault in upipe_avcdec when receiving invalid (?)
get_buffer calls.
Add octetrate to upipe_avcenc flows; move flow definition
to first frame.
Use upipe_verbose* when necessary.
upipe_x264 enhancements

x264 now copies opaque in pictures from input to output
(remove need for uref allocations and uref_mgr by keeping
incoming uref).
Fix pts/dts and framerate handling.
Add octetrate in flow definition.
Use UPROBE_LOG_VERBOSE for X264_LOG_DEBUG.
Add support for x264 options.