Cleanup: use plural names for Main lists

Convention was not to but after discussion on 918941483f7e we agree its
best to change the convention.

Names now mostly follow RNA.

Some exceptions:

- Use 'nodetrees' instead of 'nodegroups'
  since the struct is called NodeTree.
- Use 'gpencils' instead of 'grease_pencil'
  since 'gpencil' is a common abbreviation in the C code.

Other exceptions:

- Leave 'wm' as it's a list of one.
- Leave 'ipo' as is for versioning.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/blenkernel/intern/layer.c b/source/blender/blenkernel/intern/layer.c
index ebea589d402..a5360f34312 100644
--- a/source/blender/blenkernel/intern/layer.c
+++ b/source/blender/blenkernel/intern/layer.c
@@ -822,7 +822,7 @@ void BKE_main_collection_sync(const Main *bmain)
 
 	/* TODO: optimize for file load so only linked collections get checked? */
 
-	for (const Scene *scene = bmain->scene.first; scene; scene = scene->id.next) {
+	for (const Scene *scene = bmain->scenes.first; scene; scene = scene->id.next) {
 		BKE_scene_collection_sync(scene);
 	}
 }
@@ -832,7 +832,7 @@ void BKE_main_collection_sync_remap(const Main *bmain)
 	/* On remapping of object or collection pointers free caches. */
 	/* TODO: try to make this faster */
 
-	for (const Scene *scene = bmain->scene.first; scene; scene = scene->id.next) {
+	for (const Scene *scene = bmain->scenes.first; scene; scene = scene->id.next) {
 		for (ViewLayer *view_layer = scene->view_layers.first; view_layer; view_layer = view_layer->next) {
 			MEM_SAFE_FREE(view_layer->object_bases_array);
 
@@ -843,7 +843,7 @@ void BKE_main_collection_sync_remap(const Main *bmain)
 		}
 	}
 
-	for (Collection *collection = bmain->collection.first; collection; collection = collection->id.next) {
+	for (Collection *collection = bmain->collections.first; collection; collection = collection->id.next) {
 		BKE_collection_object_cache_free(collection);
 		DEG_id_tag_update_ex((Main *)bmain, &collection->id, ID_RECALC_COPY_ON_WRITE);
 	}