Import Upstream version 1.26.0

ChangeLog

NEWS

README.md

RELEASE

docs/gst_plugins_cache.json

docs/meson.build

ext/aalib/meson.build

ext/adaptivedemux2/dash/gstdashdemux.c

ext/adaptivedemux2/downloadhelper.c

ext/adaptivedemux2/gstadaptivedemux-private.h

ext/adaptivedemux2/gstadaptivedemux-stream.c

ext/adaptivedemux2/gstadaptivedemux-track.c

ext/adaptivedemux2/gstadaptivedemux.c

ext/adaptivedemux2/gstadaptivedemux.h

ext/adaptivedemux2/gstadaptivedemuxutils.c

ext/adaptivedemux2/gstisoff.c

ext/adaptivedemux2/hls/gsthlsdemux-playlist-loader.c

ext/adaptivedemux2/hls/gsthlsdemux-stream.c

ext/adaptivedemux2/hls/gsthlsdemux-util.c

ext/adaptivedemux2/hls/m3u8.c