gst-libs: handle make dist for out-of-tree build
avaudenc: fix audio encoder flushing according to libav docs

 * @param[in] frame AVFrame containing the raw audio data to be encoded.
 *                  May be NULL when flushing an encoder that has the
 *                  CODEC_CAP_DELAY capability set.

The AVFrame itself should be null, not the frame.data pointer

https://bugzilla.gnome.org/show_bug.cgi?id=724536
libav: Update to v10 beta1
avvidec: don't crash on EOS when no buffers have been received

Fixes crash on EOS when no buffers have been received for some
reason, e.g. because the parser didn't output any.

fakesrc num-buffers=0 format=time ! avdec_h264 ! fakesink
avviddec: rename hevc decoder element to h265 for consistency

We use h265 for the parser, typefinder, caps, etc. everywhere.

https://bugzilla.gnome.org/show_bug.cgi?id=724823
avmux: stream-start and segment event before data-flow
avvidenc: make all properties work again

... as previously broken due to additional compliance property
(see 13ffed87b1597fa60ccee293f71c3993ec59d1b2).
docs: install prebuilt plugin docs if gtk-doc is disabled

Sync to the Makefile.am from gst-plugin-base where it is done right.
Fixes #725034
configure: add missing docs/plugins/Makefile
docs: make the docs build again

They are still bad, but if we don't want to have them, we should rather remove this totally.
docs: add the inspected data

Not even this file was previously in the repo.
docs: try to make the generated docs more useful

Generate the section.txt file. Update the -docs.sgml file with the new sections.
If we want to actually see the baseclasses, we should define them with a _get_type() function
and have the wrapped types subclass them.
Automatic update of common submodule

From 1a07da9 to fe1672e
docs: also reactivate make dist for the docs
Automatic update of common submodule

From fe1672e to bcb1518
add docs directory to spec file
avvidenc: discard input frame upon encoding error
Update to libav v10
avcodecmap: Add mapping for Apple Intermediate Codec

https://bugzilla.gnome.org/show_bug.cgi?id=727673
codecmap: Add missing break

CID #1139752