Fix various meson and compiler warnings
subprojects/avtp: Update to latest avtp 0.2.0
Fixes some meson warnings too.
openexr: Fix some warnings
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:46:24: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
46 | virtual Int64 tellg ();
| ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
23 | typedef IMATH_NAMESPACE::Int64 Int64;
| ^~~~~
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:47:32: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
47 | virtual void seekg (Int64 pos);
| ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
23 | typedef IMATH_NAMESPACE::Int64 Int64;
| ^~~~~
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:67:26: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
67 | Int64 MemIStream::tellg ()
| ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
23 | typedef IMATH_NAMESPACE::Int64 Int64;
| ^~~~~
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:73:29: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
73 | MemIStream::seekg (Int64 pos)
| ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
23 | typedef IMATH_NAMESPACE::Int64 Int64;
| ^~~~~
meson: Bump all meson requirements to 0.60
Lots of new warnings ever since
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1934
meson: Fix warning about build_root() and source_root()
../meson.build:384: WARNING: Project targeting '>= 0.60.0' but tried to use feature deprecated since '0.56.0': meson.build_root. use meson.project_build_root() or meson.global_build_root() instead.
../meson.build:385: WARNING: Project targeting '>= 0.60.0' but tried to use feature deprecated since '0.56.0': meson.source_root. use meson.project_source_root() or meson.global_source_root() instead.
...
WARNING: Deprecated features used:
* 0.56.0: {'meson.source_root', 'meson.build_root'}