RFR: 8262366: Update glib to version 2.66.7

[Kevin Rushforth]

On Wed, 31 Mar 2021 05:15:20 GMT, Alexander Matveev <almatvee at openjdk.org> wrote:

> - GLib was updated to version 2.66.7 and GStreamer to version 1.18.3
>  - One bug was discovered in updated GStreamer which was causing deadlock or infinite loop during seek on macOS. See gstsystemclock.c for changes between ifdef GSTREAMER_LITE. Otherwise no changes.

I get a compilation error on Linux:

../../../gstreamer-lite/gst-plugins-base/gst-libs/gst/audio/audio-buffer.c: In function 'gst_audio_buffer_map':
../../../gstreamer-lite/gst-plugins-base/gst-libs/gst/audio/audio-buffer.c:158:7: error: implicit declaration of function 'memset' [-Werror=implicit-function-declaration]
  158 |       memset (buffer->map_infos, 0,
      |       ^~~~~~
../../../gstreamer-lite/gst-plugins-base/gst-libs/gst/audio/audio-buffer.c:158:7: warning: incompatible implicit declaration of built-in function 'memset'
../../../gstreamer-lite/gst-plugins-base/gst-libs/gst/audio/audio-buffer.c:26:1: note: include '<string.h>' or provide a declaration of 'memset'
...
cc1: some warnings being treated as errors
Makefile:270: recipe for target 'modules/javafx.media/build/native/linux/Release/obj/gstreamer-lite/gst-plugins-base/gst-libs/gst/audio/audio-buffer.o' failed
make: *** [modules/javafx.media/build/native/linux/Release/obj/gstreamer-lite/gst-plugins-base/gst-libs/gst/audio/audio-buffer.o] Error 1

This is with the gcc 10.2 compiler used for production builds.

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PR: https://git.openjdk.java.net/jfx/pull/447