csharp: use girs from the root project

subprojects/gstreamer-sharp/meson.build

@@ -161,21 +161,31 @@ subdir('Tests')
 bindinator = subproject('bindinator', default_options: ['gapi_fixup=@0@'.format(gapi_fixup)])
 if bindinator.get_variable('found')
     bindinate = bindinator.get_variable('bindinate')
+    env = environment()
+    env.set('GI_TYPELIB_PATH', join_paths(meson.global_source_root(), 'girs'))
+    merge_with = '--merge-with=GstApp-1.0,GstAudio-1.0,GstBase-1.0,GstController-1.0,GstNet-1.0,GstPbutils-1.0,GstRtp-1.0,GstRtsp-1.0,GstSdp-1.0,GstTag-1.0,GstVideo-1.0,GstWebRTC-1.0'
     run_target('bindinate_gstreamer',
-        command: [bindinate,
-            '--name=gstreamer', '--regenerate=true',
-            '--merge-with=GstApp-1.0,GstAudio-1.0,GstBase-1.0,GstController-1.0,GstNet-1.0,GstPbutils-1.0,GstRtp-1.0,GstRtsp-1.0,GstSdp-1.0,GstTag-1.0,GstVideo-1.0,GstWebRTC-1.0',
-            '--gir=Gst-1.0',
-            '--copy-girs=@0@'.format(join_paths(meson.current_source_dir(), 'girs'))],
-        depends: []
+        command: ['sh', '-c',
+            '''@0@ --name=gstreamer --regenerate=true @3@ --gir=Gst-1.0 --out=@1@ && mv @1@/sources/gstreamer-sharp-api.raw @2@/sources/gstreamer-sharp-api.raw '''.format(
+            bindinate.full_path(),
+            meson.current_build_dir(),
+            meson.current_source_dir(),
+            merge_with
+            ),
+        ],
+        depends: [],
+        env:env,
     )
     run_target('bindinate_ges',
         command: ['sh', '-c',
-            '''@0@ --name=gst-editing-services --regenerate=true --gir=GES-1.0 && mv @1@/sources/gst-editing-services-sharp-api.raw @1@/ges/gst-editing-services-api.raw '''.format(
-            bindinate.path(),
-            meson.current_source_dir()),
+            '''@0@ --name=gst-editing-services --regenerate=true --gir=GES-1.0 --out=@1@ && mv @1@/sources/gst-editing-services-sharp-api.raw @2@/ges/gst-editing-services-api.raw '''.format(
+            bindinate.full_path(),
+            meson.current_build_dir(),
+            meson.current_source_dir()
+            ),
         ],
-        depends: []
+        depends: [],
+        env:env,
     )
     python3 = import('python3').find_python()
     run_target('update-code', command: [find_program('update_sources.py')])