Fix MPEG-4 and VP8 APIs to export their external symbols as pure C
symbols, i.e. un-mangled for C++.
https://bugzilla.gnome.org/show_bug.cgi?id=731522
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Const-ify one more VLC table. Fix spelling of 'hybrid'.
No need to explicitly call ensure_debug_category() everywhere,
that will be done automatically from GST_LOG() and friends
via GST_CAT_DEFAULT.