Wrap dependencies add a ton of warnings with the latest GCC in Fedora
42. Squelch them by specifying that these dependencies are not
a part of the gstreamer project, and should be treated as system deps.
libsoup needs some porting work for the bump, and vorbis/lame are
already at their latest releases.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8753>
GLib guarantees libintl is always present, using proxy-libintl as
last resort. There is no need to mock gettex API any more.
This fix static build on Windows because G_INTL_STATIC_COMPILATION must
be defined before including libintl.h, and glib does it for us as part
as including glib.h.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2028>